63157797 has 6 divisors (see below), whose sum is σ = 91227942. Its totient is φ = 42105192.

The previous prime is 63157781. The next prime is 63157799. The reversal of 63157797 is 79775136.

63157797 is a `hidden beast` number, since 631 + 5 + 7 + 7 + 9 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38862756 + 24295041 = 6234^2 + 4929^2 .

It is not a de Polignac number, because 63157797 - 2⁴ = 63157781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63157799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3508758 + ... + 3508775.

It is an arithmetic number, because the mean of its divisors is an integer number (15204657).

Almost surely, 2^63157797 is an apocalyptic number.

It is an amenable number.

63157797 is a deficient number, since it is larger than the sum of its proper divisors (28070145).

63157797 is a wasteful number, since it uses less digits than its factorization.

63157797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7017539 (or 7017536 counting only the distinct ones).

The product of its digits is 277830, while the sum is 45.

The square root of 63157797 is about 7947.1879932464. The cubic root of 63157797 is about 398.2376571895.

The spelling of 63157797 in words is "sixty-three million, one hundred fifty-seven thousand, seven hundred ninety-seven".