70072947 has 12 divisors (see below), whose sum is σ = 115676080. Its totient is φ = 40041648.

The previous prime is 70072907. The next prime is 70072949. The reversal of 70072947 is 74927007.

It is not a de Polignac number, because 70072947 - 2¹⁰ = 70071923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70072949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 556072 + ... + 556197.

Almost surely, 2^70072947 is an apocalyptic number.

70072947 is a deficient number, since it is larger than the sum of its proper divisors (45603133).

70072947 is a wasteful number, since it uses less digits than its factorization.

70072947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112282 (or 1112279 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 70072947 is about 8370.9585472633. The cubic root of 70072947 is about 412.2716399944.

The spelling of 70072947 in words is "seventy million, seventy-two thousand, nine hundred forty-seven".