68884724 has 24 divisors (see below), whose sum is σ = 126083328. Its totient is φ = 32868000.

The previous prime is 68884721. The next prime is 68884757. The reversal of 68884724 is 42748886.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68884721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68594 + ... + 69590.

It is an arithmetic number, because the mean of its divisors is an integer number (5253472).

Almost surely, 2^68884724 is an apocalyptic number.

It is an amenable number.

68884724 is a deficient number, since it is larger than the sum of its proper divisors (57198604).

68884724 is a wasteful number, since it uses less digits than its factorization.

68884724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775 (or 1773 counting only the distinct ones).

The product of its digits is 688128, while the sum is 47.

The square root of 68884724 is about 8299.6821625891. The cubic root of 68884724 is about 409.9280540028.

The spelling of 68884724 in words is "sixty-eight million, eight hundred eighty-four thousand, seven hundred twenty-four".