64647654 has 16 divisors (see below), whose sum is σ = 132046848. Its totient is φ = 21090632.

The previous prime is 64647647. The next prime is 64647659. The reversal of 64647654 is 45674646.

It is a happy number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64647659) 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, 114342 + ... + 114905.

It is an arithmetic number, because the mean of its divisors is an integer number (8252928).

Almost surely, 2^64647654 is an apocalyptic number.

64647654 is an abundant number, since it is smaller than the sum of its proper divisors (67399194).

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

64647654 is a wasteful number, since it uses less digits than its factorization.

64647654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229299.

The product of its digits is 483840, while the sum is 42.

The square root of 64647654 is about 8040.3764837226. The cubic root of 64647654 is about 401.3447531975.

The spelling of 64647654 in words is "sixty-four million, six hundred forty-seven thousand, six hundred fifty-four".