690544480 has 24 divisors (see below), whose sum is σ = 1631411712. Its totient is φ = 276217728.

The previous prime is 690544441. The next prime is 690544487. The reversal of 690544480 is 84445096.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its 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 not an unprimeable number, because it can be changed into a prime (690544487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2157792 + ... + 2158111.

It is an arithmetic number, because the mean of its divisors is an integer number (67975488).

Almost surely, 2^690544480 is an apocalyptic number.

It is an amenable number.

690544480 is an abundant number, since it is smaller than the sum of its proper divisors (940867232).

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

690544480 is a wasteful number, since it uses less digits than its factorization.

690544480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4315918 (or 4315910 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 690544480 is about 26278.2130290475. The cubic root of 690544480 is about 883.8879624327.

The spelling of 690544480 in words is "six hundred ninety million, five hundred forty-four thousand, four hundred eighty".