70668819 has 12 divisors (see below), whose sum is σ = 109929456. Its totient is φ = 43488432.

The previous prime is 70668817. The next prime is 70668833. The reversal of 70668819 is 91886607.

It is a happy number.

It is not a de Polignac number, because 70668819 - 2¹ = 70668817 is a prime.

It is a super-2 number, since 2×70668819² = 9988163957709522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70668817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 301887 + ... + 302120.

It is an arithmetic number, because the mean of its divisors is an integer number (9160788).

Almost surely, 2^70668819 is an apocalyptic number.

70668819 is a deficient number, since it is larger than the sum of its proper divisors (39260637).

70668819 is a wasteful number, since it uses less digits than its factorization.

70668819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604026 (or 604023 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 70668819 is about 8406.4748259898. The cubic root of 70668819 is about 413.4369402231.

The spelling of 70668819 in words is "seventy million, six hundred sixty-eight thousand, eight hundred nineteen".