65897647031 has 8 divisors (see below), whose sum is σ = 65975906304. Its totient is φ = 65819430360.

The previous prime is 65897647007. The next prime is 65897647073. The reversal of 65897647031 is 13074679856.

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 65897647031 - 2²⁶ = 65830538167 is a prime.

It is a super-2 number, since 2×65897647031² (a number of 22 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 (65897647631) 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, 3890126 + ... + 3907028.

It is an arithmetic number, because the mean of its divisors is an integer number (8246988288).

Almost surely, 2^65897647031 is an apocalyptic number.

65897647031 is a deficient number, since it is larger than the sum of its proper divisors (78259273).

65897647031 is a wasteful number, since it uses less digits than its factorization.

65897647031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21301.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 65897647031 in words is "sixty-five billion, eight hundred ninety-seven million, six hundred forty-seven thousand, thirty-one".