689085400 has 48 divisors (see below), whose sum is σ = 1622440800. Its totient is φ = 272138880.

The previous prime is 689085389. The next prime is 689085427. The reversal of 689085400 is 4580986.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6007 + ... + 37606.

It is an arithmetic number, because the mean of its divisors is an integer number (33800850).

Almost surely, 2^689085400 is an apocalyptic number.

It is an amenable number.

689085400 is an abundant number, since it is smaller than the sum of its proper divisors (933355400).

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

689085400 is a wasteful number, since it uses less digits than its factorization.

689085400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43708 (or 43699 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 689085400 is about 26250.4361868522. The cubic root of 689085400 is about 883.2649889767.

The spelling of 689085400 in words is "six hundred eighty-nine million, eighty-five thousand, four hundred".