68664249 has 12 divisors (see below), whose sum is σ = 101488816. Its totient is φ = 44711352.

The previous prime is 68664209. The next prime is 68664251. The reversal of 68664249 is 94246686.

It is not a de Polignac number, because 68664249 - 2⁷ = 68664121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68664209) 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, 88327 + ... + 89100.

Almost surely, 2^68664249 is an apocalyptic number.

It is an amenable number.

68664249 is a deficient number, since it is larger than the sum of its proper divisors (32824567).

68664249 is a wasteful number, since it uses less digits than its factorization.

68664249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177476 (or 177473 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 68664249 is about 8286.3893825960. The cubic root of 68664249 is about 409.4902429391.

The spelling of 68664249 in words is "sixty-eight million, six hundred sixty-four thousand, two hundred forty-nine".