68790436 has 81 divisors (see below), whose sum is σ = 148394883. Its totient is φ = 27867840.

The previous prime is 68790433. The next prime is 68790451. The reversal of 68790436 is 63409786.

It is a happy number.

The square root of 68790436 is 8294.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 8820900 + 59969536 = 2970^2 + 7744^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68790392 and 68790401.

It is not an unprimeable number, because it can be changed into a prime (68790433) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2372070 + ... + 2372098.

Almost surely, 2^68790436 is an apocalyptic number.

68790436 is the 8294-th square number.

It is an amenable number.

68790436 is an abundant number, since it is smaller than the sum of its proper divisors (79604447).

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

68790436 is a wasteful number, since it uses less digits than its factorization.

68790436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The cubic root of 68790436 is about 409.7409348925.

The spelling of 68790436 in words is "sixty-eight million, seven hundred ninety thousand, four hundred thirty-six".