9401687664 has 60 divisors (see below), whose sum is σ = 24372397656. Its totient is φ = 3122994176.

The previous prime is 9401687653. The next prime is 9401687693. The reversal of 9401687664 is 4667861049.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15854152 + ... + 15854744.

Almost surely, 2^9401687664 is an apocalyptic number.

It is an amenable number.

9401687664 is an abundant number, since it is smaller than the sum of its proper divisors (14970709992).

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

9401687664 is an equidigital number, since it uses as much as digits as its factorization.

9401687664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754 (or 1155 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 9401687664 is about 96962.3002202402. The cubic root of 9401687664 is about 2110.5805896888.

The spelling of 9401687664 in words is "nine billion, four hundred one million, six hundred eighty-seven thousand, six hundred sixty-four".