68749087 has 32 divisors (see below), whose sum is σ = 82736640. Its totient is φ = 56448000.

The previous prime is 68749081. The next prime is 68749091. The reversal of 68749087 is 78094786.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68749087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68749087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68749081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 608343 + ... + 608455.

It is an arithmetic number, because the mean of its divisors is an integer number (2585520).

Almost surely, 2^68749087 is an apocalyptic number.

68749087 is a deficient number, since it is larger than the sum of its proper divisors (13987553).

68749087 is a wasteful number, since it uses less digits than its factorization.

68749087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 68749087 is about 8291.5069197342. The cubic root of 68749087 is about 409.6588218612.

The spelling of 68749087 in words is "sixty-eight million, seven hundred forty-nine thousand, eighty-seven".