307420687 has 4 divisors (see below), whose sum is σ = 351337936. Its totient is φ = 263503440.

The previous prime is 307420637. The next prime is 307420693. The reversal of 307420687 is 786024703.

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 307420687 - 2¹⁵ = 307387919 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 (307420637) 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, 21958614 + ... + 21958627.

It is an arithmetic number, because the mean of its divisors is an integer number (87834484).

Almost surely, 2^307420687 is an apocalyptic number.

307420687 is a deficient number, since it is larger than the sum of its proper divisors (43917249).

307420687 is an equidigital number, since it uses as much as digits as its factorization.

307420687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43917248.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 307420687 is about 17533.4162957480. The cubic root of 307420687 is about 674.9076687609.

The spelling of 307420687 in words is "three hundred seven million, four hundred twenty thousand, six hundred eighty-seven".