706666590 has 48 divisors (see below), whose sum is σ = 2099811168. Its totient is φ = 161523648.

The previous prime is 706666567. The next prime is 706666637. The reversal of 706666590 is 95666607.

706666590 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 560217 + ... + 561476.

It is an arithmetic number, because the mean of its divisors is an integer number (43746066).

Almost surely, 2^706666590 is an apocalyptic number.

706666590 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

706666590 is an abundant number, since it is smaller than the sum of its proper divisors (1393144578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

706666590 is a wasteful number, since it uses less digits than its factorization.

706666590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121713 (or 1121710 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 706666590 is about 26583.2012744891. The cubic root of 706666590 is about 890.7138110513.

The spelling of 706666590 in words is "seven hundred six million, six hundred sixty-six thousand, five hundred ninety".