690550480 has 20 divisors (see below), whose sum is σ = 1605530052. Its totient is φ = 276220160.

The previous prime is 690550453. The next prime is 690550481. The reversal of 690550480 is 84055096.

It can be written as a sum of positive squares in 2 ways, for example, as 278622864 + 411927616 = 16692^2 + 20296^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690550481) 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, 4315861 + ... + 4316020.

Almost surely, 2^690550480 is an apocalyptic number.

It is an amenable number.

690550480 is an abundant number, since it is smaller than the sum of its proper divisors (914979572).

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

690550480 is a wasteful number, since it uses less digits than its factorization.

690550480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8631894 (or 8631888 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 690550480 is about 26278.3271918134. The cubic root of 690550480 is about 883.8905223993.

The spelling of 690550480 in words is "six hundred ninety million, five hundred fifty thousand, four hundred eighty".