68249624 has 8 divisors (see below), whose sum is σ = 127968060. Its totient is φ = 34124808.

The previous prime is 68249609. The next prime is 68249633. The reversal of 68249624 is 42694286.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×68249624² = 9316022352282752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4265594 + ... + 4265609.

Almost surely, 2^68249624 is an apocalyptic number.

It is an amenable number.

68249624 is a deficient number, since it is larger than the sum of its proper divisors (59718436).

68249624 is a wasteful number, since it uses less digits than its factorization.

68249624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8531209 (or 8531205 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 68249624 is about 8261.3330643426. Note that the first 3 decimals coincide. The cubic root of 68249624 is about 408.6643508100.

The spelling of 68249624 in words is "sixty-eight million, two hundred forty-nine thousand, six hundred twenty-four".