306872061 has 4 divisors (see below), whose sum is σ = 409162752. Its totient is φ = 204581372.

The previous prime is 306872053. The next prime is 306872063. The reversal of 306872061 is 160278603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 306872061 - 2³ = 306872053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306872063) 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, 51145341 + ... + 51145346.

It is an arithmetic number, because the mean of its divisors is an integer number (102290688).

Almost surely, 2^306872061 is an apocalyptic number.

It is an amenable number.

306872061 is a deficient number, since it is larger than the sum of its proper divisors (102290691).

306872061 is a wasteful number, since it uses less digits than its factorization.

306872061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102290690.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 306872061 is about 17517.7641552796. The cubic root of 306872061 is about 674.5059473927.

The spelling of 306872061 in words is "three hundred six million, eight hundred seventy-two thousand, sixty-one".