687422652 has 24 divisors (see below), whose sum is σ = 1833127296. Its totient is φ = 196406448.

The previous prime is 687422651. The next prime is 687422657. The reversal of 687422652 is 256224786.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687422651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4091718 + ... + 4091885.

It is an arithmetic number, because the mean of its divisors is an integer number (76380304).

Almost surely, 2^687422652 is an apocalyptic number.

It is an amenable number.

687422652 is an abundant number, since it is smaller than the sum of its proper divisors (1145704644).

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

687422652 is a wasteful number, since it uses less digits than its factorization.

687422652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8183617 (or 8183615 counting only the distinct ones).

The product of its digits is 322560, while the sum is 42.

The square root of 687422652 is about 26218.7461942786. The cubic root of 687422652 is about 882.5539837559.

The spelling of 687422652 in words is "six hundred eighty-seven million, four hundred twenty-two thousand, six hundred fifty-two".