68929937 has 4 divisors (see below), whose sum is σ = 68990976. Its totient is φ = 68868900.

The previous prime is 68929921. The next prime is 68929963. The reversal of 68929937 is 73992986.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73992986 = 2 ⋅36996493.

It is a cyclic number.

It is not a de Polignac number, because 68929937 - 2⁴ = 68929921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68929907) 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, 28793 + ... + 31094.

It is an arithmetic number, because the mean of its divisors is an integer number (17247744).

Almost surely, 2^68929937 is an apocalyptic number.

It is an amenable number.

68929937 is a deficient number, since it is larger than the sum of its proper divisors (61039).

68929937 is a wasteful number, since it uses less digits than its factorization.

68929937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61038.

The product of its digits is 1469664, while the sum is 53.

The square root of 68929937 is about 8302.4054947949. The cubic root of 68929937 is about 410.0177208284.

The spelling of 68929937 in words is "sixty-eight million, nine hundred twenty-nine thousand, nine hundred thirty-seven".