690273858 has 16 divisors (see below), whose sum is σ = 1386632160. Its totient is φ = 229077216.

The previous prime is 690273851. The next prime is 690273877. The reversal of 690273858 is 858372096.

It is not an unprimeable number, because it can be changed into a prime (690273851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252043 + ... + 254766.

It is an arithmetic number, because the mean of its divisors is an integer number (86664510).

Almost surely, 2^690273858 is an apocalyptic number.

690273858 is an abundant number, since it is smaller than the sum of its proper divisors (696358302).

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

690273858 is a wasteful number, since it uses less digits than its factorization.

690273858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507041.

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 690273858 is about 26273.0633539372. The cubic root of 690273858 is about 883.7724831314.

The spelling of 690273858 in words is "six hundred ninety million, two hundred seventy-three thousand, eight hundred fifty-eight".