70456509 has 6 divisors (see below), whose sum is σ = 101770526. Its totient is φ = 46971000.

The previous prime is 70456423. The next prime is 70456511. The reversal of 70456509 is 90565407.

70456509 = T₂₂₇₁ + T₂₂₇₂ + ... + T₂₂₉₇.

It can be written as a sum of positive squares in only one way, i.e., 43520409 + 26936100 = 6597^2 + 5190^2 .

It is not a de Polignac number, because 70456509 - 2⁹ = 70455997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70451509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3914242 + ... + 3914259.

Almost surely, 2^70456509 is an apocalyptic number.

It is an amenable number.

70456509 is a deficient number, since it is larger than the sum of its proper divisors (31314017).

70456509 is a wasteful number, since it uses less digits than its factorization.

70456509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7828507 (or 7828504 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 70456509 is about 8393.8375609729. The cubic root of 70456509 is about 413.0224960240.

The spelling of 70456509 in words is "seventy million, four hundred fifty-six thousand, five hundred nine".