64642062 has 8 divisors (see below), whose sum is σ = 129284136. Its totient is φ = 21547352.

The previous prime is 64642057. The next prime is 64642133. The reversal of 64642062 is 26024646.

It is a sphenic number, since it is the product of 3 distinct primes.

64642062 is an admirable number.

It is a super-2 number, since 2×64642062² = 8357192359223688, 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 3 ways as a sum of consecutive naturals, for example, 5386833 + ... + 5386844.

It is an arithmetic number, because the mean of its divisors is an integer number (16160517).

Almost surely, 2^64642062 is an apocalyptic number.

64642062 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64642062 is a wasteful number, since it uses less digits than its factorization.

64642062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10773682.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 64642062 is about 8040.0287312919. The cubic root of 64642062 is about 401.3331808025. Note that the first 3 decimals are identical.

The spelling of 64642062 in words is "sixty-four million, six hundred forty-two thousand, sixty-two".