70440357 has 32 divisors (see below), whose sum is σ = 104767488. Its totient is φ = 41823936.

The previous prime is 70440323. The next prime is 70440371. The reversal of 70440357 is 75304407.

It is not a de Polignac number, because 70440357 - 2²³ = 62051749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70440317) 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 31 ways as a sum of consecutive naturals, for example, 151908 + ... + 152370.

It is an arithmetic number, because the mean of its divisors is an integer number (3273984).

Almost surely, 2^70440357 is an apocalyptic number.

It is an amenable number.

70440357 is a deficient number, since it is larger than the sum of its proper divisors (34327131).

70440357 is a wasteful number, since it uses less digits than its factorization.

70440357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 70440357 is about 8392.8753714088. The cubic root of 70440357 is about 412.9909321118.

The spelling of 70440357 in words is "seventy million, four hundred forty thousand, three hundred fifty-seven".