10664640631 has 8 divisors (see below), whose sum is σ = 10682777664. Its totient is φ = 10646519520.

The previous prime is 10664640619. The next prime is 10664640689. The reversal of 10664640631 is 13604646601.

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 10664640631 - 2⁵ = 10664640599 is a prime.

It is a super-2 number, since 2×10664640631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10662640631) 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, 2436561 + ... + 2440933.

It is an arithmetic number, because the mean of its divisors is an integer number (1335347208).

Almost surely, 2^10664640631 is an apocalyptic number.

10664640631 is a deficient number, since it is larger than the sum of its proper divisors (18137033).

10664640631 is an equidigital number, since it uses as much as digits as its factorization.

10664640631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7961.

The product of its (nonzero) digits is 62208, while the sum is 37.

It can be divided in two parts, 10664640 and 631, that added together give a triangular number (10665271 = T₄₆₁₈).

The spelling of 10664640631 in words is "ten billion, six hundred sixty-four million, six hundred forty thousand, six hundred thirty-one".