68837985 has 16 divisors (see below), whose sum is σ = 122378880. Its totient is φ = 36713520.

The previous prime is 68837983. The next prime is 68837987. The reversal of 68837985 is 58973886.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68837983) and next prime (68837987).

It is not a de Polignac number, because 68837985 - 2¹ = 68837983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68837983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254821 + ... + 255090.

It is an arithmetic number, because the mean of its divisors is an integer number (7648680).

Almost surely, 2^68837985 is an apocalyptic number.

It is an amenable number.

68837985 is a deficient number, since it is larger than the sum of its proper divisors (53540895).

68837985 is a wasteful number, since it uses less digits than its factorization.

68837985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509925 (or 509919 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 68837985 is about 8296.8659745714. The cubic root of 68837985 is about 409.8353195465.

The spelling of 68837985 in words is "sixty-eight million, eight hundred thirty-seven thousand, nine hundred eighty-five".