70140405 has 16 divisors (see below), whose sum is σ = 112648320. Its totient is φ = 37267008.

The previous prime is 70140379. The next prime is 70140407. The reversal of 70140405 is 50404107.

It is not a de Polignac number, because 70140405 - 2⁶ = 70140341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70140407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4657 + ... + 12726.

It is an arithmetic number, because the mean of its divisors is an integer number (7040520).

Almost surely, 2^70140405 is an apocalyptic number.

It is an amenable number.

70140405 is a deficient number, since it is larger than the sum of its proper divisors (42507915).

70140405 is a wasteful number, since it uses less digits than its factorization.

70140405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17660.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 70140405 is about 8374.9868656613. The cubic root of 70140405 is about 412.4038931290.

The spelling of 70140405 in words is "seventy million, one hundred forty thousand, four hundred five".