70901909 has 8 divisors (see below), whose sum is σ = 76742400. Its totient is φ = 65116656.

The previous prime is 70901891. The next prime is 70901911. The reversal of 70901909 is 90910907.

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-70901909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70901009) 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, 11117 + ... + 16290.

It is an arithmetic number, because the mean of its divisors is an integer number (9592800).

Almost surely, 2^70901909 is an apocalyptic number.

It is an amenable number.

70901909 is a deficient number, since it is larger than the sum of its proper divisors (5840491).

70901909 is a wasteful number, since it uses less digits than its factorization.

70901909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27619.

The product of its (nonzero) digits is 5103, while the sum is 35.

The square root of 70901909 is about 8420.3271314124. The cubic root of 70901909 is about 413.8909936509.

The spelling of 70901909 in words is "seventy million, nine hundred one thousand, nine hundred nine".