70115899 has 4 divisors (see below), whose sum is σ = 80132464. Its totient is φ = 60099336.

The previous prime is 70115887. The next prime is 70115921. The reversal of 70115899 is 99851107.

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 70115899 - 2⁵ = 70115867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70115809) 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, 5008272 + ... + 5008285.

It is an arithmetic number, because the mean of its divisors is an integer number (20033116).

Almost surely, 2^70115899 is an apocalyptic number.

70115899 is a deficient number, since it is larger than the sum of its proper divisors (10016565).

70115899 is a wasteful number, since it uses less digits than its factorization.

70115899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10016564.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 70115899 is about 8373.5236907768. The cubic root of 70115899 is about 412.3558583002.

The spelling of 70115899 in words is "seventy million, one hundred fifteen thousand, eight hundred ninety-nine".