70711978 has 8 divisors (see below), whose sum is σ = 106120800. Its totient is φ = 35338380.

The previous prime is 70711969. The next prime is 70711987. The reversal of 70711978 is 87911707.

It is an interprime number because it is at equal distance from previous prime (70711969) and next prime (70711987).

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

It is a self number, because there is not a number n which added to its sum of digits gives 70711978.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3028 + ... + 12271.

It is an arithmetic number, because the mean of its divisors is an integer number (13265100).

Almost surely, 2^70711978 is an apocalyptic number.

70711978 is a deficient number, since it is larger than the sum of its proper divisors (35408822).

70711978 is a wasteful number, since it uses less digits than its factorization.

70711978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17612.

The product of its (nonzero) digits is 24696, while the sum is 40.

The square root of 70711978 is about 8409.0414435892. The cubic root of 70711978 is about 413.5210881019.

The spelling of 70711978 in words is "seventy million, seven hundred eleven thousand, nine hundred seventy-eight".