63842957 has 2 divisors, whose sum is σ = 63842958. Its totient is φ = 63842956.

The previous prime is 63842927. The next prime is 63843023. The reversal of 63842957 is 75924836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57320041 + 6522916 = 7571^2 + 2554^2 .

It is a cyclic number.

It is not a de Polignac number, because 63842957 - 2¹² = 63838861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63842927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31921478 + 31921479.

It is an arithmetic number, because the mean of its divisors is an integer number (31921479).

Almost surely, 2^63842957 is an apocalyptic number.

It is an amenable number.

63842957 is a deficient number, since it is larger than the sum of its proper divisors (1).

63842957 is an equidigital number, since it uses as much as digits as its factorization.

63842957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The square root of 63842957 is about 7990.1787839822. The cubic root of 63842957 is about 399.6725591126.

The spelling of 63842957 in words is "sixty-three million, eight hundred forty-two thousand, nine hundred fifty-seven".