663142951 has 2 divisors, whose sum is σ = 663142952. Its totient is φ = 663142950.

The previous prime is 663142937. The next prime is 663142957. The reversal of 663142951 is 159241366.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663142951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 663142951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663142957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331571475 + 331571476.

It is an arithmetic number, because the mean of its divisors is an integer number (331571476).

Almost surely, 2^663142951 is an apocalyptic number.

663142951 is a deficient number, since it is larger than the sum of its proper divisors (1).

663142951 is an equidigital number, since it uses as much as digits as its factorization.

663142951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 663142951 is about 25751.5621079576. The cubic root of 663142951 is about 872.0386204418.

The spelling of 663142951 in words is "six hundred sixty-three million, one hundred forty-two thousand, nine hundred fifty-one".