70191970 has 16 divisors (see below), whose sum is σ = 127598328. Its totient is φ = 27798400.

The previous prime is 70191943. The next prime is 70191983. The reversal of 70191970 is 7919107.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 62678889 + 7513081 = 7917^2 + 2741^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33739 + ... + 35758.

Almost surely, 2^70191970 is an apocalyptic number.

70191970 is a deficient number, since it is larger than the sum of its proper divisors (57406358).

70191970 is a wasteful number, since it uses less digits than its factorization.

70191970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69605.

The product of its (nonzero) digits is 3969, while the sum is 34.

The square root of 70191970 is about 8378.0648123537. The cubic root of 70191970 is about 412.5049304584.

The spelling of 70191970 in words is "seventy million, one hundred ninety-one thousand, nine hundred seventy".