68988507 has 8 divisors (see below), whose sum is σ = 105125376. Its totient is φ = 39421992.

The previous prime is 68988503. The next prime is 68988511. The reversal of 68988507 is 70588986.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68988503) and next prime (68988511).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68988507 - 2² = 68988503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68988507.

It is not an unprimeable number, because it can be changed into a prime (68988503) 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, 1642563 + ... + 1642604.

It is an arithmetic number, because the mean of its divisors is an integer number (13140672).

Almost surely, 2^68988507 is an apocalyptic number.

68988507 is a deficient number, since it is larger than the sum of its proper divisors (36136869).

68988507 is a wasteful number, since it uses less digits than its factorization.

68988507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285177.

The product of its (nonzero) digits is 967680, while the sum is 51.

The square root of 68988507 is about 8305.9320368036. The cubic root of 68988507 is about 410.1338190984.

The spelling of 68988507 in words is "sixty-eight million, nine hundred eighty-eight thousand, five hundred seven".