690220853042 has 90 divisors (see below), whose sum is σ = 1276752937599. Its totient is φ = 279795925080.

The previous prime is 690220852861. The next prime is 690220853053. The reversal of 690220853042 is 240358022096.

It can be written as a sum of positive squares in only one way, i.e., 345110426521 + 345110426521 = 587461^2 + 587461^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=587461.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1093852067 + ... + 1093852697.

Almost surely, 2^690220853042 is an apocalyptic number.

690220853042 is a deficient number, since it is larger than the sum of its proper divisors (586532084557).

690220853042 is an frugal number, since it uses more digits than its factorization.

690220853042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 690220853042 in words is "six hundred ninety billion, two hundred twenty million, eight hundred fifty-three thousand, forty-two".