687022242 has 16 divisors (see below), whose sum is σ = 1374473280. Its totient is φ = 228935952.

The previous prime is 687022229. The next prime is 687022247. The reversal of 687022242 is 242220786.

It is a super-2 number, since 2×687022242² = 943999122005413128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (687022247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5268 + ... + 37440.

It is an arithmetic number, because the mean of its divisors is an integer number (85904580).

Almost surely, 2^687022242 is an apocalyptic number.

687022242 is an abundant number, since it is smaller than the sum of its proper divisors (687451038).

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

687022242 is a wasteful number, since it uses less digits than its factorization.

687022242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35737.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 687022242 is about 26211.1091333427. The cubic root of 687022242 is about 882.3825937700.

The spelling of 687022242 in words is "six hundred eighty-seven million, twenty-two thousand, two hundred forty-two".