70732643 has 2 divisors, whose sum is σ = 70732644. Its totient is φ = 70732642.

The previous prime is 70732639. The next prime is 70732723. The reversal of 70732643 is 34623707.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70732643 - 2² = 70732639 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_4158653 and since 70732643 and 4158653 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (70732633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35366321 + 35366322.

It is an arithmetic number, because the mean of its divisors is an integer number (35366322).

Almost surely, 2^70732643 is an apocalyptic number.

70732643 is a deficient number, since it is larger than the sum of its proper divisors (1).

70732643 is an equidigital number, since it uses as much as digits as its factorization.

70732643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 32.

The square root of 70732643 is about 8410.2700907878. The cubic root of 70732643 is about 413.5613669025.

The spelling of 70732643 in words is "seventy million, seven hundred thirty-two thousand, six hundred forty-three".