70021036 has 6 divisors (see below), whose sum is σ = 122536820. Its totient is φ = 35010516.

The previous prime is 70021001. The next prime is 70021037. The reversal of 70021036 is 63012007.

It is not an unprimeable number, because it can be changed into a prime (70021037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8752626 + ... + 8752633.

Almost surely, 2^70021036 is an apocalyptic number.

It is an amenable number.

70021036 is a deficient number, since it is larger than the sum of its proper divisors (52515784).

70021036 is a wasteful number, since it uses less digits than its factorization.

70021036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17505263 (or 17505261 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 70021036 is about 8367.8573123590. The cubic root of 70021036 is about 412.1698093497.

It can be divided in two parts, 700 and 21036, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 70021036 in words is "seventy million, twenty-one thousand, thirty-six".