70604509 has 2 divisors, whose sum is σ = 70604510. Its totient is φ = 70604508.

The previous prime is 70604489. The next prime is 70604537. The reversal of 70604509 is 90540607.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61622500 + 8982009 = 7850^2 + 2997^2 .

It is an emirp because it is prime and its reverse (90540607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70604509 - 2⁷ = 70604381 is a prime.

It is a super-2 number, since 2×70604509² = 9969993382262162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70604539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35302254 + 35302255.

It is an arithmetic number, because the mean of its divisors is an integer number (35302255).

Almost surely, 2^70604509 is an apocalyptic number.

It is an amenable number.

70604509 is a deficient number, since it is larger than the sum of its proper divisors (1).

70604509 is an equidigital number, since it uses as much as digits as its factorization.

70604509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 70604509 is about 8402.6489275704. The cubic root of 70604509 is about 413.3114902753.

The spelling of 70604509 in words is "seventy million, six hundred four thousand, five hundred nine".