70000019 has 4 divisors (see below), whose sum is σ = 71186520. Its totient is φ = 68813520.

The previous prime is 69999989. The next prime is 70000027. The reversal of 70000019 is 91000007.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70000019 - 2²⁴ = 53222803 is a prime.

It is a super-2 number, since 2×70000019² = 9800005320000722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69999961 and 70000006.

It is not an unprimeable number, because it can be changed into a prime (70000069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593162 + ... + 593279.

It is an arithmetic number, because the mean of its divisors is an integer number (17796630).

Almost surely, 2^70000019 is an apocalyptic number.

70000019 is a deficient number, since it is larger than the sum of its proper divisors (1186501).

70000019 is a wasteful number, since it uses less digits than its factorization.

70000019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186500.

The product of its (nonzero) digits is 63, while the sum is 17.

The square root of 70000019 is about 8366.6014008079. The cubic root of 70000019 is about 412.1285672687.

The spelling of 70000019 in words is "seventy million, nineteen", and thus it is an aban number and an uban number.