964538681 has 8 divisors (see below), whose sum is σ = 1022563584. Its totient is φ = 908195760.

The previous prime is 964538651. The next prime is 964538689. The reversal of 964538681 is 186835469.

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 964538681 - 2¹⁰ = 964537657 is a prime.

It is a super-2 number, since 2×964538681² = 1860669734290439522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (964538689) 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, 419315 + ... + 421608.

It is an arithmetic number, because the mean of its divisors is an integer number (127820448).

Almost surely, 2^964538681 is an apocalyptic number.

It is an amenable number.

964538681 is a deficient number, since it is larger than the sum of its proper divisors (58024903).

964538681 is a wasteful number, since it uses less digits than its factorization.

964538681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840991.

The product of its digits is 1244160, while the sum is 50.

The square root of 964538681 is about 31057.0230543753. The cubic root of 964538681 is about 988.0370180828.

The spelling of 964538681 in words is "nine hundred sixty-four million, five hundred thirty-eight thousand, six hundred eighty-one".