662978963 has 2 divisors, whose sum is σ = 662978964. Its totient is φ = 662978962.

The previous prime is 662978957. The next prime is 662978983. The reversal of 662978963 is 369879266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 662978963 - 2⁸ = 662978707 is a prime.

It is a super-2 number, since 2×662978963² = 879082210761110738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 662978899 and 662978908.

It is not a weakly prime, because it can be changed into another prime (662978983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331489481 + 331489482.

It is an arithmetic number, because the mean of its divisors is an integer number (331489482).

Almost surely, 2^662978963 is an apocalyptic number.

662978963 is a deficient number, since it is larger than the sum of its proper divisors (1).

662978963 is an equidigital number, since it uses as much as digits as its factorization.

662978963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 56.

The square root of 662978963 is about 25748.3778712369. The cubic root of 662978963 is about 871.9667326442.

The spelling of 662978963 in words is "six hundred sixty-two million, nine hundred seventy-eight thousand, nine hundred sixty-three".