70679917 has 16 divisors (see below), whose sum is σ = 90173952. Its totient is φ = 53791920.

The previous prime is 70679909. The next prime is 70679927. The reversal of 70679917 is 71997607.

It is not a de Polignac number, because 70679917 - 2³ = 70679909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70679927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7363 + ... + 13984.

It is an arithmetic number, because the mean of its divisors is an integer number (5635872).

Almost surely, 2^70679917 is an apocalyptic number.

70679917 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

70679917 is a deficient number, since it is larger than the sum of its proper divisors (19494035).

70679917 is a wasteful number, since it uses less digits than its factorization.

70679917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21408.

The product of its (nonzero) digits is 166698, while the sum is 46.

The square root of 70679917 is about 8407.1348865116. The cubic root of 70679917 is about 413.4585814648.

The spelling of 70679917 in words is "seventy million, six hundred seventy-nine thousand, nine hundred seventeen".