687083490 has 48 divisors (see below), whose sum is σ = 1788766200. Its totient is φ = 182981376.

The previous prime is 687083489. The next prime is 687083503. The reversal of 687083490 is 94380786.

It is a happy number.

687083490 is a `hidden beast` number, since 6 + 87 + 0 + 83 + 490 = 666.

687083490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 456377769 + 230705721 = 21363^2 + 15189^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70006 + ... + 79214.

Almost surely, 2^687083490 is an apocalyptic number.

687083490 is an abundant number, since it is smaller than the sum of its proper divisors (1101682710).

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

687083490 is a wasteful number, since it uses less digits than its factorization.

687083490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10051 (or 10048 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 687083490 is about 26212.2774668666. The cubic root of 687083490 is about 882.4088144462.

The spelling of 687083490 in words is "six hundred eighty-seven million, eighty-three thousand, four hundred ninety".