70731147 has 16 divisors (see below), whose sum is σ = 97493760. Its totient is φ = 45588000.

The previous prime is 70731137. The next prime is 70731179. The reversal of 70731147 is 74113707.

It is not a de Polignac number, because 70731147 - 2⁶ = 70731083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70731127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7522 + ... + 14072.

It is an arithmetic number, because the mean of its divisors is an integer number (6093360).

Almost surely, 2^70731147 is an apocalyptic number.

70731147 is a deficient number, since it is larger than the sum of its proper divisors (26762613).

70731147 is a wasteful number, since it uses less digits than its factorization.

70731147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6674.

The product of its (nonzero) digits is 4116, while the sum is 30.

The square root of 70731147 is about 8410.1811514378. The cubic root of 70731147 is about 413.5584512653.

The spelling of 70731147 in words is "seventy million, seven hundred thirty-one thousand, one hundred forty-seven".