689858390 has 32 divisors (see below), whose sum is σ = 1346919840. Its totient is φ = 252877824.

The previous prime is 689858387. The next prime is 689858399. The reversal of 689858390 is 93858986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689858399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1019 + ... + 37158.

It is an arithmetic number, because the mean of its divisors is an integer number (42091245).

Almost surely, 2^689858390 is an apocalyptic number.

689858390 is a deficient number, since it is larger than the sum of its proper divisors (657061450).

689858390 is a wasteful number, since it uses less digits than its factorization.

689858390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38336.

The product of its (nonzero) digits is 3732480, while the sum is 56.

The square root of 689858390 is about 26265.1554345296. The cubic root of 689858390 is about 883.5951366704.

The spelling of 689858390 in words is "six hundred eighty-nine million, eight hundred fifty-eight thousand, three hundred ninety".