687485070 has 40 divisors (see below), whose sum is σ = 1848573144. Its totient is φ = 183329136.

The previous prime is 687485041. The next prime is 687485077. The reversal of 687485070 is 70584786.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687485077) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 423564 + ... + 425183.

Almost surely, 2^687485070 is an apocalyptic number.

687485070 is an abundant number, since it is smaller than the sum of its proper divisors (1161088074).

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

687485070 is a wasteful number, since it uses less digits than its factorization.

687485070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848766 (or 848757 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 687485070 is about 26219.9364987789. The cubic root of 687485070 is about 882.5806949246.

The spelling of 687485070 in words is "six hundred eighty-seven million, four hundred eighty-five thousand, seventy".