687249948 has 48 divisors (see below), whose sum is σ = 1999275264. Its totient is φ = 178506240.

The previous prime is 687249929. The next prime is 687249949. The reversal of 687249948 is 849942786.

687249948 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687249949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370965 + ... + 372812.

It is an arithmetic number, because the mean of its divisors is an integer number (41651568).

Almost surely, 2^687249948 is an apocalyptic number.

It is an amenable number.

687249948 is an abundant number, since it is smaller than the sum of its proper divisors (1312025316).

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

687249948 is a wasteful number, since it uses less digits than its factorization.

687249948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743802 (or 743800 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 57.

The square root of 687249948 is about 26215.4524660552. The cubic root of 687249948 is about 882.4800683517.

The spelling of 687249948 in words is "six hundred eighty-seven million, two hundred forty-nine thousand, nine hundred forty-eight".