64610663 has 8 divisors (see below), whose sum is σ = 69861456. Its totient is φ = 59400000.

The previous prime is 64610653. The next prime is 64610669. The reversal of 64610663 is 36601646.

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

It is a cyclic number.

It is not a de Polignac number, because 64610663 - 2⁶ = 64610599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64610669) 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, 6638 + ... + 13163.

It is an arithmetic number, because the mean of its divisors is an integer number (8732682).

Almost surely, 2^64610663 is an apocalyptic number.

64610663 is a deficient number, since it is larger than the sum of its proper divisors (5250793).

64610663 is a wasteful number, since it uses less digits than its factorization.

64610663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20065.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 64610663 is about 8038.0758269626. The cubic root of 64610663 is about 401.2681895721.

The spelling of 64610663 in words is "sixty-four million, six hundred ten thousand, six hundred sixty-three".