78061576 has 32 divisors (see below), whose sum is σ = 154526400. Its totient is φ = 36866880.

The previous prime is 78061573. The next prime is 78061631. The reversal of 78061576 is 67516087.

It is not an unprimeable number, because it can be changed into a prime (78061573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75946 + ... + 76966.

It is an arithmetic number, because the mean of its divisors is an integer number (4828950).

Almost surely, 2^78061576 is an apocalyptic number.

78061576 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

78061576 is a deficient number, since it is larger than the sum of its proper divisors (76464824).

78061576 is a wasteful number, since it uses less digits than its factorization.

78061576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549 (or 1545 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 78061576 is about 8835.2462331279. The cubic root of 78061576 is about 427.3782716012.

The spelling of 78061576 in words is "seventy-eight million, sixty-one thousand, five hundred seventy-six".