64769906 has 8 divisors (see below), whose sum is σ = 99780780. Its totient is φ = 31509648.

The previous prime is 64769899. The next prime is 64769933. The reversal of 64769906 is 60996746.

It can be written as a sum of positive squares in 2 ways, for example, as 64657681 + 112225 = 8041^2 + 335^2 .

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

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, 437561 + ... + 437708.

Almost surely, 2^64769906 is an apocalyptic number.

64769906 is a deficient number, since it is larger than the sum of its proper divisors (35010874).

64769906 is a wasteful number, since it uses less digits than its factorization.

64769906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875308.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 64769906 is about 8047.9752733219. The cubic root of 64769906 is about 401.5975816706.

The spelling of 64769906 in words is "sixty-four million, seven hundred sixty-nine thousand, nine hundred six".