78965650 has 12 divisors (see below), whose sum is σ = 146876202. Its totient is φ = 31586240.

The previous prime is 78965617. The next prime is 78965669. The reversal of 78965650 is 5656987.

It can be written as a sum of positive squares in 3 ways, for example, as 51308569 + 27657081 = 7163^2 + 5259^2 .

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 78965650.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 789607 + ... + 789706.

Almost surely, 2^78965650 is an apocalyptic number.

78965650 is a deficient number, since it is larger than the sum of its proper divisors (67910552).

78965650 is a wasteful number, since it uses less digits than its factorization.

78965650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579325 (or 1579320 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 78965650 is about 8886.2618687500. The cubic root of 78965650 is about 429.0218436579.

The spelling of 78965650 in words is "seventy-eight million, nine hundred sixty-five thousand, six hundred fifty".