689480078 has 16 divisors (see below), whose sum is σ = 1206088800. Its totient is φ = 295491168.

The previous prime is 689480069. The next prime is 689480081. The reversal of 689480078 is 870084986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501851 + ... + 503222.

It is an arithmetic number, because the mean of its divisors is an integer number (75380550).

Almost surely, 2^689480078 is an apocalyptic number.

689480078 is a deficient number, since it is larger than the sum of its proper divisors (516608722).

689480078 is a wasteful number, since it uses less digits than its factorization.

689480078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005096 (or 1005082 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 689480078 is about 26257.9526620032. The cubic root of 689480078 is about 883.4335886526.

The spelling of 689480078 in words is "six hundred eighty-nine million, four hundred eighty thousand, seventy-eight".