63018557 has 6 divisors (see below), whose sum is σ = 73307358. Its totient is φ = 54015864.

The previous prime is 63018547. The next prime is 63018563. The reversal of 63018557 is 75581036.

It can be written as a sum of positive squares in only one way, i.e., 61795321 + 1223236 = 7861^2 + 1106^2 .

It is not a de Polignac number, because 63018557 - 2⁸ = 63018301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63018547) 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, 642998 + ... + 643095.

It is an arithmetic number, because the mean of its divisors is an integer number (12217893).

Almost surely, 2^63018557 is an apocalyptic number.

It is an amenable number.

63018557 is a deficient number, since it is larger than the sum of its proper divisors (10288801).

63018557 is a wasteful number, since it uses less digits than its factorization.

63018557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286107 (or 1286100 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 63018557 is about 7938.4228282449. The cubic root of 63018557 is about 397.9447854012.

The spelling of 63018557 in words is "sixty-three million, eighteen thousand, five hundred fifty-seven".