678040465 has 8 divisors (see below), whose sum is σ = 815592960. Its totient is φ = 541136112.

The previous prime is 678040439. The next prime is 678040481. The reversal of 678040465 is 564040876.

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

It is a cyclic number.

It is not a de Polignac number, because 678040465 - 2²⁵ = 644486033 is a prime.

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, 159729 + ... + 163918.

It is an arithmetic number, because the mean of its divisors is an integer number (101949120).

Almost surely, 2^678040465 is an apocalyptic number.

It is an amenable number.

678040465 is a deficient number, since it is larger than the sum of its proper divisors (137552495).

678040465 is a wasteful number, since it uses less digits than its factorization.

678040465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324071.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 678040465 is about 26039.2101454710. The cubic root of 678040465 is about 878.5204412148.

The spelling of 678040465 in words is "six hundred seventy-eight million, forty thousand, four hundred sixty-five".