662960641 has 12 divisors (see below), whose sum is σ = 773203860. Its totient is φ = 566774880.

The previous prime is 662960629. The next prime is 662960651. The reversal of 662960641 is 146069266.

It can be written as a sum of positive squares in 2 ways, for example, as 190550416 + 472410225 = 13804^2 + 21735^2 .

It is a de Polignac number, because none of the positive numbers 2^k-662960641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 662960594 and 662960603.

It is not an unprimeable number, because it can be changed into a prime (662960651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1671 + ... + 36451.

It is an arithmetic number, because the mean of its divisors is an integer number (64433655).

Almost surely, 2^662960641 is an apocalyptic number.

It is an amenable number.

662960641 is a deficient number, since it is larger than the sum of its proper divisors (110243219).

662960641 is a wasteful number, since it uses less digits than its factorization.

662960641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35184 (or 35177 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 662960641 is about 25748.0220793753. The cubic root of 662960641 is about 871.9587000507.

The spelling of 662960641 in words is "six hundred sixty-two million, nine hundred sixty thousand, six hundred forty-one".