64147356 has 192 divisors, whose sum is σ = 209986560. Its totient is φ = 16485120.

The previous prime is 64147351. The next prime is 64147387. The reversal of 64147356 is 65374146.

It is a happy number.

64147356 is a `hidden beast` number, since 641 + 4 + 7 + 3 + 5 + 6 = 666.

It is a super-2 number, since 2×64147356² = 8229766563581472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 64147356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64147351) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 599455 + ... + 599561.

It is an arithmetic number, because the mean of its divisors is an integer number (1093680).

Almost surely, 2^64147356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64147356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104993280).

64147356 is an abundant number, since it is smaller than the sum of its proper divisors (145839204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64147356 is a wasteful number, since it uses less digits than its factorization.

64147356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 193 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 64147356 is about 8009.2044548757. The cubic root of 64147356 is about 400.3067563579.

64147356 divided by its sum of digits (36) gives a palindrome (1781871).

The spelling of 64147356 in words is "sixty-four million, one hundred forty-seven thousand, three hundred fifty-six".