68253157 has 8 divisors (see below), whose sum is σ = 78134976. Its totient is φ = 58404192.

The previous prime is 68253047. The next prime is 68253179. The reversal of 68253157 is 75135286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68253157 - 2¹¹ = 68251109 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 (68253557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3583 + ... + 12220.

It is an arithmetic number, because the mean of its divisors is an integer number (9766872).

Almost surely, 2^68253157 is an apocalyptic number.

It is an amenable number.

68253157 is a deficient number, since it is larger than the sum of its proper divisors (9881819).

68253157 is a wasteful number, since it uses less digits than its factorization.

68253157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16427.

The product of its digits is 50400, while the sum is 37.

The square root of 68253157 is about 8261.5468890517. The cubic root of 68253157 is about 408.6714023079.

The spelling of 68253157 in words is "sixty-eight million, two hundred fifty-three thousand, one hundred fifty-seven".