64473486 has 64 divisors (see below), whose sum is σ = 170242560. Its totient is φ = 15759360.

The previous prime is 64473457. The next prime is 64473491. The reversal of 64473486 is 68437446.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3750 + ... + 11958.

It is an arithmetic number, because the mean of its divisors is an integer number (2660040).

Almost surely, 2^64473486 is an apocalyptic number.

64473486 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 64473486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85121280).

64473486 is an abundant number, since it is smaller than the sum of its proper divisors (105769074).

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

64473486 is a wasteful number, since it uses less digits than its factorization.

64473486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8249.

The product of its digits is 387072, while the sum is 42.

The square root of 64473486 is about 8029.5383428937. The cubic root of 64473486 is about 400.9840065097.

The spelling of 64473486 in words is "sixty-four million, four hundred seventy-three thousand, four hundred eighty-six".