964256681 has 4 divisors (see below), whose sum is σ = 964913664. Its totient is φ = 963599700.

The previous prime is 964256663. The next prime is 964256693. The reversal of 964256681 is 186652469.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 186652469 = 17 ⋅10979557.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-964256681 is a prime.

It is a super-2 number, since 2×964256681² = 1859581893706271522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (964256651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326285 + ... + 329226.

It is an arithmetic number, because the mean of its divisors is an integer number (241228416).

Almost surely, 2^964256681 is an apocalyptic number.

It is an amenable number.

964256681 is a deficient number, since it is larger than the sum of its proper divisors (656983).

964256681 is a wasteful number, since it uses less digits than its factorization.

964256681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656982.

The product of its digits is 622080, while the sum is 47.

The square root of 964256681 is about 31052.4826865744. The cubic root of 964256681 is about 987.9407186453.

The spelling of 964256681 in words is "nine hundred sixty-four million, two hundred fifty-six thousand, six hundred eighty-one".