70457909 has 8 divisors (see below), whose sum is σ = 74269440. Its totient is φ = 66656736.

The previous prime is 70457869. The next prime is 70457923. The reversal of 70457909 is 90975407.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70457909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70457939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14249 + ... + 18545.

It is an arithmetic number, because the mean of its divisors is an integer number (9283680).

Almost surely, 2^70457909 is an apocalyptic number.

It is an amenable number.

70457909 is a deficient number, since it is larger than the sum of its proper divisors (3811531).

70457909 is a wasteful number, since it uses less digits than its factorization.

70457909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5179.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 70457909 is about 8393.9209550722. The cubic root of 70457909 is about 413.0252316486.

The spelling of 70457909 in words is "seventy million, four hundred fifty-seven thousand, nine hundred nine".