63700997 has 2 divisors, whose sum is σ = 63700998. Its totient is φ = 63700996.

The previous prime is 63700993. The next prime is 63701047. The reversal of 63700997 is 79900736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32273761 + 31427236 = 5681^2 + 5606^2 .

It is a cyclic number.

It is not a de Polignac number, because 63700997 - 2² = 63700993 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63700991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31850498 + 31850499.

It is an arithmetic number, because the mean of its divisors is an integer number (31850499).

Almost surely, 2^63700997 is an apocalyptic number.

It is an amenable number.

63700997 is a deficient number, since it is larger than the sum of its proper divisors (1).

63700997 is an equidigital number, since it uses as much as digits as its factorization.

63700997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 63700997 is about 7981.2904345099. The cubic root of 63700997 is about 399.3761044752.

The spelling of 63700997 in words is "sixty-three million, seven hundred thousand, nine hundred ninety-seven".