64147950 has 120 divisors (see below), whose sum is σ = 182568672. Its totient is φ = 16692480.

The previous prime is 64147883. The next prime is 64147991. The reversal of 64147950 is 5974146.

64147950 is a `hidden beast` number, since 641 + 4 + 7 + 9 + 5 + 0 = 666.

It is a super-2 number, since 2×64147950² = 8229918978405000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 190182 + ... + 190518.

Almost surely, 2^64147950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64147950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91284336).

64147950 is an abundant number, since it is smaller than the sum of its proper divisors (118420722).

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

64147950 is a wasteful number, since it uses less digits than its factorization.

64147950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 64147950 is about 8009.2415371245. The cubic root of 64147950 is about 400.3079919582.

The spelling of 64147950 in words is "sixty-four million, one hundred forty-seven thousand, nine hundred fifty".