70751145 has 32 divisors (see below), whose sum is σ = 118554624. Its totient is φ = 35985600.

The previous prime is 70751143. The next prime is 70751147. The reversal of 70751145 is 54115707.

It is an interprime number because it is at equal distance from previous prime (70751143) and next prime (70751147).

It is not a de Polignac number, because 70751145 - 2¹ = 70751143 is a prime.

It is a super-2 number, since 2×70751145² = 10011449037622050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (70751143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31944 + ... + 34086.

It is an arithmetic number, because the mean of its divisors is an integer number (3704832).

Almost surely, 2^70751145 is an apocalyptic number.

It is an amenable number.

70751145 is a deficient number, since it is larger than the sum of its proper divisors (47803479).

70751145 is a wasteful number, since it uses less digits than its factorization.

70751145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253.

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 70751145 is about 8411.3699835401. The cubic root of 70751145 is about 413.5974230759.

The spelling of 70751145 in words is "seventy million, seven hundred fifty-one thousand, one hundred forty-five".