307649746 has 8 divisors (see below), whose sum is σ = 473947020. Its totient is φ = 149667408.

The previous prime is 307649723. The next prime is 307649791. The reversal of 307649746 is 647946703.

It can be written as a sum of positive squares in 2 ways, for example, as 289374121 + 18275625 = 17011^2 + 4275^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 307649696 and 307649705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2078641 + ... + 2078788.

Almost surely, 2^307649746 is an apocalyptic number.

307649746 is a deficient number, since it is larger than the sum of its proper divisors (166297274).

307649746 is a wasteful number, since it uses less digits than its factorization.

307649746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4157468.

The product of its (nonzero) digits is 762048, while the sum is 46.

The square root of 307649746 is about 17539.9471492932. The cubic root of 307649746 is about 675.0752516012.

The spelling of 307649746 in words is "three hundred seven million, six hundred forty-nine thousand, seven hundred forty-six".