768623540 has 36 divisors (see below), whose sum is σ = 1671724236. Its totient is φ = 296841216.

The previous prime is 768623539. The next prime is 768623561. The reversal of 768623540 is 45326867.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 10942864 + 757680676 = 3308^2 + 27526^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6029 + ... + 39668.

Almost surely, 2^768623540 is an apocalyptic number.

It is an amenable number.

768623540 is an abundant number, since it is smaller than the sum of its proper divisors (903100696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

768623540 is a wasteful number, since it uses less digits than its factorization.

768623540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45764 (or 45733 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 768623540 is about 27724.0606693897. The cubic root of 768623540 is about 916.0191655824.

The spelling of 768623540 in words is "seven hundred sixty-eight million, six hundred twenty-three thousand, five hundred forty".