78679545 has 48 divisors (see below), whose sum is σ = 147547008. Its totient is φ = 35696640.

The previous prime is 78679499. The next prime is 78679547. The reversal of 78679545 is 54597687.

It is not a de Polignac number, because 78679545 - 2⁹ = 78679033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78679547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122425 + ... + 123065.

It is an arithmetic number, because the mean of its divisors is an integer number (3073896).

Almost surely, 2^78679545 is an apocalyptic number.

It is an amenable number.

78679545 is a deficient number, since it is larger than the sum of its proper divisors (68867463).

78679545 is a wasteful number, since it uses less digits than its factorization.

78679545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830 (or 823 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 51.

The square root of 78679545 is about 8870.1490968303. The cubic root of 78679545 is about 428.5030787031.

The spelling of 78679545 in words is "seventy-eight million, six hundred seventy-nine thousand, five hundred forty-five".