78106970 has 8 divisors (see below), whose sum is σ = 140592564. Its totient is φ = 31242784.

The previous prime is 78106961. The next prime is 78106981. The reversal of 78106970 is 7960187.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 77986561 + 120409 = 8831^2 + 347^2 .

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

It is a super-2 number, since 2×78106970² = 12201397525161800, 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, 3905339 + ... + 3905358.

Almost surely, 2^78106970 is an apocalyptic number.

78106970 is a deficient number, since it is larger than the sum of its proper divisors (62485594).

78106970 is a wasteful number, since it uses less digits than its factorization.

78106970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7810704.

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

The square root of 78106970 is about 8837.8147751579. The cubic root of 78106970 is about 427.4610978816.

The spelling of 78106970 in words is "seventy-eight million, one hundred six thousand, nine hundred seventy".