70672919 has 4 divisors (see below), whose sum is σ = 70696560. Its totient is φ = 70649280.

The previous prime is 70672909. The next prime is 70672967. The reversal of 70672919 is 91927607.

It is a happy number.

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 70672919 - 2⁸ = 70672663 is a prime.

It is a super-2 number, since 2×70672919² = 9989322959961122, 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 (70672909) 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, 6554 + ... + 13575.

It is an arithmetic number, because the mean of its divisors is an integer number (17674140).

Almost surely, 2^70672919 is an apocalyptic number.

70672919 is a deficient number, since it is larger than the sum of its proper divisors (23641).

70672919 is a wasteful number, since it uses less digits than its factorization.

70672919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23640.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 70672919 is about 8406.7186821018. The cubic root of 70672919 is about 413.4449355393. Note that the first 3 decimals are identical.

The spelling of 70672919 in words is "seventy million, six hundred seventy-two thousand, nine hundred nineteen".