690351540890 has 32 divisors (see below), whose sum is σ = 1435340533824. Its totient is φ = 236270045440.

The previous prime is 690351540889. The next prime is 690351540899. The reversal of 690351540890 is 98045153096.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (690351540899) 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, 184584104 + ... + 184587843.

It is an arithmetic number, because the mean of its divisors is an integer number (44854391682).

Almost surely, 2^690351540890 is an apocalyptic number.

690351540890 is an abundant number, since it is smaller than the sum of its proper divisors (744988992934).

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

690351540890 is a wasteful number, since it uses less digits than its factorization.

690351540890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369171982.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 690351540890 in words is "six hundred ninety billion, three hundred fifty-one million, five hundred forty thousand, eight hundred ninety".