78877546 has 16 divisors (see below), whose sum is σ = 129467520. Its totient is φ = 35743680.

The previous prime is 78877537. The next prime is 78877549. The reversal of 78877546 is 64577887.

It is a junction number, because it is equal to n+sod(n) for n = 78877493 and 78877502.

It is not an unprimeable number, because it can be changed into a prime (78877549) 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, 2095 + ... + 12733.

It is an arithmetic number, because the mean of its divisors is an integer number (8091720).

Almost surely, 2^78877546 is an apocalyptic number.

78877546 is a deficient number, since it is larger than the sum of its proper divisors (50589974).

78877546 is a wasteful number, since it uses less digits than its factorization.

78877546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10989.

The product of its digits is 2634240, while the sum is 52.

The square root of 78877546 is about 8881.3031701434. The cubic root of 78877546 is about 428.8622273908.

The spelling of 78877546 in words is "seventy-eight million, eight hundred seventy-seven thousand, five hundred forty-six".