70900019 has 4 divisors (see below), whose sum is σ = 71562744. Its totient is φ = 70237296.

The previous prime is 70899977. The next prime is 70900021. The reversal of 70900019 is 91000907.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91000907 = 6121 ⋅14867.

It is a cyclic number.

It is not a de Polignac number, because 70900019 - 2¹⁶ = 70834483 is a prime.

It is a super-2 number, since 2×70900019² = 10053625388400722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70900079) 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, 331202 + ... + 331415.

It is an arithmetic number, because the mean of its divisors is an integer number (17890686).

Almost surely, 2^70900019 is an apocalyptic number.

70900019 is a deficient number, since it is larger than the sum of its proper divisors (662725).

70900019 is a wasteful number, since it uses less digits than its factorization.

70900019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662724.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 70900019 is about 8420.2149022457. The cubic root of 70900019 is about 413.8873159835.

The spelling of 70900019 in words is "seventy million, nine hundred thousand, nineteen".