70709397 has 32 divisors (see below), whose sum is σ = 105670656. Its totient is φ = 41697600.

The previous prime is 70709389. The next prime is 70709413. The reversal of 70709397 is 79390707.

It is not a de Polignac number, because 70709397 - 2³ = 70709389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70702397) 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, 241183 + ... + 241475.

It is an arithmetic number, because the mean of its divisors is an integer number (3302208).

Almost surely, 2^70709397 is an apocalyptic number.

It is an amenable number.

70709397 is a deficient number, since it is larger than the sum of its proper divisors (34961259).

70709397 is a wasteful number, since it uses less digits than its factorization.

70709397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481.

The product of its (nonzero) digits is 83349, while the sum is 42.

The square root of 70709397 is about 8408.8879764211. The cubic root of 70709397 is about 413.5160568425.

The spelling of 70709397 in words is "seventy million, seven hundred nine thousand, three hundred ninety-seven".