68151937 has 4 divisors (see below), whose sum is σ = 77887936. Its totient is φ = 58415940.

The previous prime is 68151913. The next prime is 68151959. The reversal of 68151937 is 73915186.

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 68151937 - 2²³ = 59763329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68151937.

It is not an unprimeable number, because it can be changed into a prime (68151037) 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, 4867989 + ... + 4868002.

It is an arithmetic number, because the mean of its divisors is an integer number (19471984).

Almost surely, 2^68151937 is an apocalyptic number.

It is an amenable number.

68151937 is a deficient number, since it is larger than the sum of its proper divisors (9735999).

68151937 is an equidigital number, since it uses as much as digits as its factorization.

68151937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9735998.

The product of its digits is 45360, while the sum is 40.

The square root of 68151937 is about 8255.4186447448. The cubic root of 68151937 is about 408.4692813287.

The spelling of 68151937 in words is "sixty-eight million, one hundred fifty-one thousand, nine hundred thirty-seven".