64768406 has 16 divisors (see below), whose sum is σ = 99658944. Its totient is φ = 31552584.

The previous prime is 64768399. The next prime is 64768409. The reversal of 64768406 is 60486746.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64768409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49841 + ... + 51123.

It is an arithmetic number, because the mean of its divisors is an integer number (6228684).

Almost surely, 2^64768406 is an apocalyptic number.

64768406 is a deficient number, since it is larger than the sum of its proper divisors (34890538).

64768406 is a wasteful number, since it uses less digits than its factorization.

64768406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 64768406 is about 8047.8820816411. The cubic root of 64768406 is about 401.5944814602.

The spelling of 64768406 in words is "sixty-four million, seven hundred sixty-eight thousand, four hundred six".