68791506 has 32 divisors (see below), whose sum is σ = 158450688. Its totient is φ = 19503120.

The previous prime is 68791493. The next prime is 68791519. The reversal of 68791506 is 60519786.

It is an interprime number because it is at equal distance from previous prime (68791493) and next prime (68791519).

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

It is a Curzon number.

It is a zygodrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 750 + ... + 11753.

It is an arithmetic number, because the mean of its divisors is an integer number (4951584).

Almost surely, 2^68791506 is an apocalyptic number.

68791506 is an abundant number, since it is smaller than the sum of its proper divisors (89659182).

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

68791506 is a wasteful number, since it uses less digits than its factorization.

68791506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12646.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 68791506 is about 8294.0645042102. The cubic root of 68791506 is about 409.7430593182.

Subtracting from 68791506 its product of nonzero digits (90720), we obtain a palindrome (68700786).

It can be divided in two parts, 6879 and 1506, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 68791506 in words is "sixty-eight million, seven hundred ninety-one thousand, five hundred six".