678132590 has 16 divisors (see below), whose sum is σ = 1221861888. Its totient is φ = 270981216.

The previous prime is 678132571. The next prime is 678132599. The reversal of 678132590 is 95231876.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678132599) 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, 23342 + ... + 43601.

It is an arithmetic number, because the mean of its divisors is an integer number (76366368).

Almost surely, 2^678132590 is an apocalyptic number.

678132590 is a deficient number, since it is larger than the sum of its proper divisors (543729298).

678132590 is a wasteful number, since it uses less digits than its factorization.

678132590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67963.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 678132590 is about 26040.9790522553. The cubic root of 678132590 is about 878.5602274491.

The spelling of 678132590 in words is "six hundred seventy-eight million, one hundred thirty-two thousand, five hundred ninety".