662600961 has 36 divisors (see below), whose sum is σ = 1088336340. Its totient is φ = 387710400.

The previous prime is 662600941. The next prime is 662600963. The reversal of 662600961 is 169006266.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 341510400 + 321090561 = 18480^2 + 17919^2 .

It is not a de Polignac number, because 662600961 - 2⁵ = 662600929 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (662600963) 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 35 ways as a sum of consecutive naturals, for example, 21091 + ... + 42071.

It is an arithmetic number, because the mean of its divisors is an integer number (30231565).

Almost surely, 2^662600961 is an apocalyptic number.

It is an amenable number.

662600961 is a deficient number, since it is larger than the sum of its proper divisors (425735379).

662600961 is a wasteful number, since it uses less digits than its factorization.

662600961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21038 (or 21024 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 662600961 is about 25741.0365175919. The cubic root of 662600961 is about 871.8009818692.

The spelling of 662600961 in words is "six hundred sixty-two million, six hundred thousand, nine hundred sixty-one".