70004491 has 2 divisors, whose sum is σ = 70004492. Its totient is φ = 70004490.

The previous prime is 70004483. The next prime is 70004497. The reversal of 70004491 is 19440007.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70004491 - 2³ = 70004483 is a prime.

It is not a weakly prime, because it can be changed into another prime (70004497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35002245 + 35002246.

It is an arithmetic number, because the mean of its divisors is an integer number (35002246).

Almost surely, 2^70004491 is an apocalyptic number.

70004491 is a deficient number, since it is larger than the sum of its proper divisors (1).

70004491 is an equidigital number, since it uses as much as digits as its factorization.

70004491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 70004491 is about 8366.8686496204. The cubic root of 70004491 is about 412.1373434554.

Adding to 70004491 its reverse (19440007), we get a palindrome (89444498).

The spelling of 70004491 in words is "seventy million, four thousand, four hundred ninety-one".