64654906 has 4 divisors (see below), whose sum is σ = 96982362. Its totient is φ = 32327452.

The previous prime is 64654903. The next prime is 64654907. The reversal of 64654906 is 60945646.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 62267881 + 2387025 = 7891^2 + 1545^2 .

It is not an unprimeable number, because it can be changed into a prime (64654903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16163725 + ... + 16163728.

Almost surely, 2^64654906 is an apocalyptic number.

64654906 is a deficient number, since it is larger than the sum of its proper divisors (32327456).

64654906 is a wasteful number, since it uses less digits than its factorization.

64654906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32327455.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 64654906 is about 8040.8274449835. The cubic root of 64654906 is about 401.3597598948.

The spelling of 64654906 in words is "sixty-four million, six hundred fifty-four thousand, nine hundred six".