964606821 has 8 divisors (see below), whose sum is σ = 1342061760. Its totient is φ = 615111552.

The previous prime is 964606813. The next prime is 964606823. The reversal of 964606821 is 128606469.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 964606821 - 2³ = 964606813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (964606823) 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, 6989836 + ... + 6989973.

It is an arithmetic number, because the mean of its divisors is an integer number (167757720).

Almost surely, 2^964606821 is an apocalyptic number.

It is an amenable number.

964606821 is a deficient number, since it is larger than the sum of its proper divisors (377454939).

964606821 is a wasteful number, since it uses less digits than its factorization.

964606821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13979835.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 964606821 is about 31058.1200493526. The cubic root of 964606821 is about 988.0602842163.

The spelling of 964606821 in words is "nine hundred sixty-four million, six hundred six thousand, eight hundred twenty-one".