70320745 has 16 divisors (see below), whose sum is σ = 92975040. Its totient is φ = 50632000.

The previous prime is 70320727. The next prime is 70320749. The reversal of 70320745 is 54702307.

It is not a de Polignac number, because 70320745 - 2⁹ = 70320233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70320749) 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, 775 + ... + 11884.

It is an arithmetic number, because the mean of its divisors is an integer number (5810940).

Almost surely, 2^70320745 is an apocalyptic number.

It is an amenable number.

70320745 is a deficient number, since it is larger than the sum of its proper divisors (22654295).

70320745 is a wasteful number, since it uses less digits than its factorization.

70320745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12776.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 70320745 is about 8385.7465380251. The cubic root of 70320745 is about 412.7570384532.

The spelling of 70320745 in words is "seventy million, three hundred twenty thousand, seven hundred forty-five".