70563813 has 4 divisors (see below), whose sum is σ = 94085088. Its totient is φ = 47042540.

The previous prime is 70563809. The next prime is 70563859. The reversal of 70563813 is 31836507.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70563813 - 2² = 70563809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70563863) 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, 11760633 + ... + 11760638.

It is an arithmetic number, because the mean of its divisors is an integer number (23521272).

Almost surely, 2^70563813 is an apocalyptic number.

It is an amenable number.

70563813 is a deficient number, since it is larger than the sum of its proper divisors (23521275).

70563813 is a wasteful number, since it uses less digits than its factorization.

70563813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23521274.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 70563813 is about 8400.2269612196. The cubic root of 70563813 is about 413.2320649556.

The spelling of 70563813 in words is "seventy million, five hundred sixty-three thousand, eight hundred thirteen".