68157001 has 12 divisors (see below), whose sum is σ = 75770100. Its totient is φ = 61255040.

The previous prime is 68156999. The next prime is 68157031. The reversal of 68157001 is 10075186.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32216976 + 35940025 = 5676^2 + 5995^2 .

It is not a de Polignac number, because 68157001 - 2¹ = 68156999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68157031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7605 + ... + 13933.

It is an arithmetic number, because the mean of its divisors is an integer number (6314175).

Almost surely, 2^68157001 is an apocalyptic number.

It is an amenable number.

68157001 is a deficient number, since it is larger than the sum of its proper divisors (7613099).

68157001 is a wasteful number, since it uses less digits than its factorization.

68157001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6440 (or 6429 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 68157001 is about 8255.7253466912. The cubic root of 68157001 is about 408.4793981221.

The spelling of 68157001 in words is "sixty-eight million, one hundred fifty-seven thousand, one".