68513504 has 24 divisors (see below), whose sum is σ = 140752080. Its totient is φ = 32766976.

The previous prime is 68513479. The next prime is 68513507. The reversal of 68513504 is 40531586.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68513507) 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, 45809 + ... + 47280.

It is an arithmetic number, because the mean of its divisors is an integer number (5864670).

Almost surely, 2^68513504 is an apocalyptic number.

It is an amenable number.

68513504 is an abundant number, since it is smaller than the sum of its proper divisors (72238576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68513504 is a wasteful number, since it uses less digits than its factorization.

68513504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93122 (or 93114 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 68513504 is about 8277.2884448955. The cubic root of 68513504 is about 409.1903593966.

The spelling of 68513504 in words is "sixty-eight million, five hundred thirteen thousand, five hundred four".