70513073 has 2 divisors, whose sum is σ = 70513074. Its totient is φ = 70513072.

The previous prime is 70513061. The next prime is 70513099. The reversal of 70513073 is 37031507.

It is an a-pointer prime, because the next prime (70513099) can be obtained adding 70513073 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45792289 + 24720784 = 6767^2 + 4972^2 .

It is an emirp because it is prime and its reverse (37031507) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70513073 - 2⁴ = 70513057 is a prime.

It is not a weakly prime, because it can be changed into another prime (70513013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35256536 + 35256537.

It is an arithmetic number, because the mean of its divisors is an integer number (35256537).

Almost surely, 2^70513073 is an apocalyptic number.

It is an amenable number.

70513073 is a deficient number, since it is larger than the sum of its proper divisors (1).

70513073 is an equidigital number, since it uses as much as digits as its factorization.

70513073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2205, while the sum is 26.

The square root of 70513073 is about 8397.2062616087. The cubic root of 70513073 is about 413.1329942386.

The spelling of 70513073 in words is "seventy million, five hundred thirteen thousand, seventy-three".