70079978 has 8 divisors (see below), whose sum is σ = 106203972. Its totient is φ = 34678656.

The previous prime is 70079959. The next prime is 70079987. The reversal of 70079978 is 87997007.

It can be written as a sum of positive squares in 2 ways, for example, as 61512649 + 8567329 = 7843^2 + 2927^2 .

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

It is a super-2 number, since 2×70079978² = 9822406632960968, which contains 22 as substring.

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, 180425 + ... + 180812.

Almost surely, 2^70079978 is an apocalyptic number.

70079978 is a deficient number, since it is larger than the sum of its proper divisors (36123994).

70079978 is a wasteful number, since it uses less digits than its factorization.

70079978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361336.

The product of its (nonzero) digits is 222264, while the sum is 47.

The square root of 70079978 is about 8371.3785005816. The cubic root of 70079978 is about 412.2854284110.

The spelling of 70079978 in words is "seventy million, seventy-nine thousand, nine hundred seventy-eight".