70020719 has 4 divisors (see below), whose sum is σ = 73706040. Its totient is φ = 66335400.

The previous prime is 70020701. The next prime is 70020721. The reversal of 70020719 is 91702007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91702007 = 163 ⋅562589.

It is a cyclic number.

It is not a de Polignac number, because 70020719 - 2⁸ = 70020463 is a prime.

It is a super-2 number, since 2×70020719² = 9805802178553922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70020799) 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, 1842632 + ... + 1842669.

It is an arithmetic number, because the mean of its divisors is an integer number (18426510).

Almost surely, 2^70020719 is an apocalyptic number.

70020719 is a deficient number, since it is larger than the sum of its proper divisors (3685321).

70020719 is a wasteful number, since it uses less digits than its factorization.

70020719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3685320.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 70020719 is about 8367.8383708100. The cubic root of 70020719 is about 412.1691873556.

The spelling of 70020719 in words is "seventy million, twenty thousand, seven hundred nineteen".