75070999 has 4 divisors (see below), whose sum is σ = 75131064. Its totient is φ = 75010936.

The previous prime is 75070939. The next prime is 75071023. The reversal of 75070999 is 99907057.

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 75070999 - 2²¹ = 72973847 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 (75070909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28117 + ... + 30670.

It is an arithmetic number, because the mean of its divisors is an integer number (18782766).

Almost surely, 2^75070999 is an apocalyptic number.

75070999 is a deficient number, since it is larger than the sum of its proper divisors (60065).

75070999 is a wasteful number, since it uses less digits than its factorization.

75070999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60064.

The product of its (nonzero) digits is 178605, while the sum is 46.

The square root of 75070999 is about 8664.3521973659. The cubic root of 75070999 is about 421.8493637389.

The spelling of 75070999 in words is "seventy-five million, seventy thousand, nine hundred ninety-nine".