68509392 has 40 divisors (see below), whose sum is σ = 202266816. Its totient is φ = 19574016.

The previous prime is 68509373. The next prime is 68509393. The reversal of 68509392 is 29390586.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68509393) 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, 101613 + ... + 102284.

Almost surely, 2^68509392 is an apocalyptic number.

It is an amenable number.

68509392 is an abundant number, since it is smaller than the sum of its proper divisors (133757424).

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

68509392 is a wasteful number, since it uses less digits than its factorization.

68509392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203915 (or 203909 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 68509392 is about 8277.0400506461. The cubic root of 68509392 is about 409.1821730571.

The spelling of 68509392 in words is "sixty-eight million, five hundred nine thousand, three hundred ninety-two".