308608641 has 24 divisors (see below), whose sum is σ = 507439296. Its totient is φ = 178902240.

The previous prime is 308608639. The next prime is 308608661. The reversal of 308608641 is 146806803.

It is a happy number.

308608641 is a `hidden beast` number, since 3 + 0 + 8 + 6 + 0 + 8 + 641 = 666.

It is not a de Polignac number, because 308608641 - 2¹ = 308608639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 308608596 and 308608605.

It is not an unprimeable number, because it can be changed into a prime (308608661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65490 + ... + 70043.

It is an arithmetic number, because the mean of its divisors is an integer number (21143304).

Almost surely, 2^308608641 is an apocalyptic number.

It is an amenable number.

308608641 is a deficient number, since it is larger than the sum of its proper divisors (198830655).

308608641 is a wasteful number, since it uses less digits than its factorization.

308608641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135573 (or 135570 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 308608641 is about 17567.2604864845. The cubic root of 308608641 is about 675.7758913346.

The spelling of 308608641 in words is "three hundred eight million, six hundred eight thousand, six hundred forty-one".