71270099 has 4 divisors (see below), whose sum is σ = 71326680. Its totient is φ = 71213520.

The previous prime is 71270063. The next prime is 71270113. The reversal of 71270099 is 99007217.

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 71270099 - 2¹² = 71266003 is a prime.

It is a super-2 number, since 2×71270099² = 10158854022939602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71270009) 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, 26357 + ... + 28934.

It is an arithmetic number, because the mean of its divisors is an integer number (17831670).

Almost surely, 2^71270099 is an apocalyptic number.

71270099 is a deficient number, since it is larger than the sum of its proper divisors (56581).

71270099 is a wasteful number, since it uses less digits than its factorization.

71270099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56580.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 71270099 is about 8442.1619861265. The cubic root of 71270099 is about 414.6061953527.

The spelling of 71270099 in words is "seventy-one million, two hundred seventy thousand, ninety-nine".