78477962 has 8 divisors (see below), whose sum is σ = 120898596. Its totient is φ = 38178432.

The previous prime is 78477953. The next prime is 78477989. The reversal of 78477962 is 26977487.

It can be written as a sum of positive squares in 2 ways, for example, as 77986561 + 491401 = 8831^2 + 701^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 78477962.

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, 530183 + ... + 530330.

Almost surely, 2^78477962 is an apocalyptic number.

78477962 is a deficient number, since it is larger than the sum of its proper divisors (42420634).

78477962 is a wasteful number, since it uses less digits than its factorization.

78477962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060552.

The product of its digits is 1185408, while the sum is 50.

The square root of 78477962 is about 8858.7788097457. The cubic root of 78477962 is about 428.1368131928.

The spelling of 78477962 in words is "seventy-eight million, four hundred seventy-seven thousand, nine hundred sixty-two".