306426961 has 4 divisors (see below), whose sum is σ = 307765300. Its totient is φ = 305088624.

The previous prime is 306426949. The next prime is 306427001. The reversal of 306426961 is 169624603.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 285779025 + 20647936 = 16905^2 + 4544^2 .

It is a cyclic number.

It is not a de Polignac number, because 306426961 - 2⁵ = 306426929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 306426961.

It is not an unprimeable number, because it can be changed into a prime (306426361) 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, 668826 + ... + 669283.

It is an arithmetic number, because the mean of its divisors is an integer number (76941325).

Almost surely, 2^306426961 is an apocalyptic number.

It is an amenable number.

306426961 is a deficient number, since it is larger than the sum of its proper divisors (1338339).

306426961 is a wasteful number, since it uses less digits than its factorization.

306426961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338338.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 306426961 is about 17505.0552983988. The cubic root of 306426961 is about 674.1796791046.

The spelling of 306426961 in words is "three hundred six million, four hundred twenty-six thousand, nine hundred sixty-one".