70047445 has 16 divisors (see below), whose sum is σ = 93445632. Its totient is φ = 50057280.

The previous prime is 70047431. The next prime is 70047449. The reversal of 70047445 is 54474007.

It is not a de Polignac number, because 70047445 - 2⁷ = 70047317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70047449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15367 + ... + 19396.

It is an arithmetic number, because the mean of its divisors is an integer number (5840352).

Almost surely, 2^70047445 is an apocalyptic number.

It is an amenable number.

70047445 is a deficient number, since it is larger than the sum of its proper divisors (23398187).

70047445 is a wasteful number, since it uses less digits than its factorization.

70047445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34812.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 70047445 is about 8369.4351661268. The cubic root of 70047445 is about 412.2216205622.

The spelling of 70047445 in words is "seventy million, forty-seven thousand, four hundred forty-five".