70873137 has 24 divisors (see below), whose sum is σ = 108186624. Its totient is φ = 46348848.

The previous prime is 70873109. The next prime is 70873139. The reversal of 70873137 is 73137807.

It is a happy number.

It is not a de Polignac number, because 70873137 - 2¹² = 70869041 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (70873139) 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 23 ways as a sum of consecutive naturals, for example, 10128 + ... + 15630.

It is an arithmetic number, because the mean of its divisors is an integer number (4507776).

Almost surely, 2^70873137 is an apocalyptic number.

It is an amenable number.

70873137 is a deficient number, since it is larger than the sum of its proper divisors (37313487).

70873137 is an equidigital number, since it uses as much as digits as its factorization.

70873137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5571 (or 5559 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 70873137 is about 8418.6184733601. The cubic root of 70873137 is about 413.8350004108.

The spelling of 70873137 in words is "seventy million, eight hundred seventy-three thousand, one hundred thirty-seven".