70061978 has 16 divisors (see below), whose sum is σ = 120401664. Its totient is φ = 29952720.

The previous prime is 70061903. The next prime is 70061993. The reversal of 70061978 is 87916007.

It is a happy number.

It is a super-2 number, since 2×70061978² = 9817361522544968, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50 + ... + 11837.

It is an arithmetic number, because the mean of its divisors is an integer number (7525104).

Almost surely, 2^70061978 is an apocalyptic number.

70061978 is a deficient number, since it is larger than the sum of its proper divisors (50339686).

70061978 is a wasteful number, since it uses less digits than its factorization.

70061978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12317.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 70061978 is about 8370.3033397840. The cubic root of 70061978 is about 412.2501269674.

The spelling of 70061978 in words is "seventy million, sixty-one thousand, nine hundred seventy-eight".