70531673 has 2 divisors, whose sum is σ = 70531674. Its totient is φ = 70531672.

The previous prime is 70531661. The next prime is 70531687. The reversal of 70531673 is 37613507.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69839449 + 692224 = 8357^2 + 832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70531673 is a prime.

It is not a weakly prime, because it can be changed into another prime (70531693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35265836 + 35265837.

It is an arithmetic number, because the mean of its divisors is an integer number (35265837).

Almost surely, 2^70531673 is an apocalyptic number.

It is an amenable number.

70531673 is a deficient number, since it is larger than the sum of its proper divisors (1).

70531673 is an equidigital number, since it uses as much as digits as its factorization.

70531673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 32.

The square root of 70531673 is about 8398.3136997852. The cubic root of 70531673 is about 413.1693165725.

The spelling of 70531673 in words is "seventy million, five hundred thirty-one thousand, six hundred seventy-three".