690228193876 has 24 divisors (see below), whose sum is σ = 1300998351240. Its totient is φ = 318521876352.

The previous prime is 690228193867. The next prime is 690228193913. The reversal of 690228193876 is 678391822096.

It can be written as a sum of positive squares in 4 ways, for example, as 2861180100 + 687367013776 = 53490^2 + 829076^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563911 + ... + 1303246.

It is an arithmetic number, because the mean of its divisors is an integer number (54208264635).

Almost surely, 2^690228193876 is an apocalyptic number.

It is an amenable number.

690228193876 is a deficient number, since it is larger than the sum of its proper divisors (610770157364).

690228193876 is a wasteful number, since it uses less digits than its factorization.

690228193876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874283 (or 1874281 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 61.

The spelling of 690228193876 in words is "six hundred ninety billion, two hundred twenty-eight million, one hundred ninety-three thousand, eight hundred seventy-six".