68902553 has 4 divisors (see below), whose sum is σ = 71125248. Its totient is φ = 66679860.

The previous prime is 68902529. The next prime is 68902567. The reversal of 68902553 is 35520986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68902553 - 2¹² = 68898457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68905553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111301 + ... + 1111362.

It is an arithmetic number, because the mean of its divisors is an integer number (17781312).

Almost surely, 2^68902553 is an apocalyptic number.

It is an amenable number.

68902553 is a deficient number, since it is larger than the sum of its proper divisors (2222695).

68902553 is a wasteful number, since it uses less digits than its factorization.

68902553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222694.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 68902553 is about 8300.7561703739. The cubic root of 68902553 is about 409.9634173190.

The spelling of 68902553 in words is "sixty-eight million, nine hundred two thousand, five hundred fifty-three".