70391207 has 8 divisors (see below), whose sum is σ = 72912000. Its totient is φ = 67876704.

The previous prime is 70391197. The next prime is 70391227. The reversal of 70391207 is 70219307.

It is a happy number.

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

It is not a de Polignac number, because 70391207 - 2²² = 66196903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70391207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70391227) 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, 44138 + ... + 45704.

It is an arithmetic number, because the mean of its divisors is an integer number (9114000).

Almost surely, 2^70391207 is an apocalyptic number.

70391207 is a deficient number, since it is larger than the sum of its proper divisors (2520793).

70391207 is a wasteful number, since it uses less digits than its factorization.

70391207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3145.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 70391207 is about 8389.9467817144. The cubic root of 70391207 is about 412.8948544837.

The spelling of 70391207 in words is "seventy million, three hundred ninety-one thousand, two hundred seven".