64932678 has 40 divisors (see below), whose sum is σ = 146123472. Its totient is φ = 21551184.

The previous prime is 64932677. The next prime is 64932683. The reversal of 64932678 is 87623946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64932677) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 44151 + ... + 45597.

Almost surely, 2^64932678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64932678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73061736).

64932678 is an abundant number, since it is smaller than the sum of its proper divisors (81190794).

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

64932678 is a wasteful number, since it uses less digits than its factorization.

64932678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738 (or 1729 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 64932678 is about 8058.0815334669. The cubic root of 64932678 is about 401.9337159593.

The spelling of 64932678 in words is "sixty-four million, nine hundred thirty-two thousand, six hundred seventy-eight".