70404643 has 2 divisors, whose sum is σ = 70404644. Its totient is φ = 70404642.

The previous prime is 70404623. The next prime is 70404647. The reversal of 70404643 is 34640407.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70404643 - 2⁵ = 70404611 is a prime.

It is not a weakly prime, because it can be changed into another prime (70404647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35202321 + 35202322.

It is an arithmetic number, because the mean of its divisors is an integer number (35202322).

Almost surely, 2^70404643 is an apocalyptic number.

70404643 is a deficient number, since it is larger than the sum of its proper divisors (1).

70404643 is an equidigital number, since it uses as much as digits as its factorization.

70404643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 70404643 is about 8390.7474637246. The cubic root of 70404643 is about 412.9211234008.

The spelling of 70404643 in words is "seventy million, four hundred four thousand, six hundred forty-three".