70045919 has 2 divisors, whose sum is σ = 70045920. Its totient is φ = 70045918.

The previous prime is 70045901. The next prime is 70045993. The reversal of 70045919 is 91954007.

It is a weak prime.

It is an emirp because it is prime and its reverse (91954007) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70045919 - 2⁸ = 70045663 is a prime.

It is a super-2 number, since 2×70045919² = 9812861537109122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70045519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35022959 + 35022960.

It is an arithmetic number, because the mean of its divisors is an integer number (35022960).

Almost surely, 2^70045919 is an apocalyptic number.

70045919 is a deficient number, since it is larger than the sum of its proper divisors (1).

70045919 is an equidigital number, since it uses as much as digits as its factorization.

70045919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 70045919 is about 8369.3440005773. The cubic root of 70045919 is about 412.2186270923.

The spelling of 70045919 in words is "seventy million, forty-five thousand, nine hundred nineteen".