70745899 has 4 divisors (see below), whose sum is σ = 80852464. Its totient is φ = 60639336.

The previous prime is 70745881. The next prime is 70745921. The reversal of 70745899 is 99854707.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70745899 - 2²³ = 62357291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70745809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5053272 + ... + 5053285.

It is an arithmetic number, because the mean of its divisors is an integer number (20213116).

Almost surely, 2^70745899 is an apocalyptic number.

70745899 is a deficient number, since it is larger than the sum of its proper divisors (10106565).

70745899 is a wasteful number, since it uses less digits than its factorization.

70745899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10106564.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 70745899 is about 8411.0581379515. The cubic root of 70745899 is about 413.5872004583.

The spelling of 70745899 in words is "seventy million, seven hundred forty-five thousand, eight hundred ninety-nine".