690466819226 has 4 divisors (see below), whose sum is σ = 1035700228842. Its totient is φ = 345233409612.

The previous prime is 690466819193. The next prime is 690466819249. The reversal of 690466819226 is 622918664096.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 588210768601 + 102256050625 = 766949^2 + 319775^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172616704805 + ... + 172616704808.

Almost surely, 2^690466819226 is an apocalyptic number.

690466819226 is a deficient number, since it is larger than the sum of its proper divisors (345233409616).

690466819226 is a wasteful number, since it uses less digits than its factorization.

690466819226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345233409615.

The product of its (nonzero) digits is 13436928, while the sum is 59.

The spelling of 690466819226 in words is "six hundred ninety billion, four hundred sixty-six million, eight hundred nineteen thousand, two hundred twenty-six".