685263948 has 48 divisors (see below), whose sum is σ = 1729050624. Its totient is φ = 210407680.

The previous prime is 685263947. The next prime is 685263961. The reversal of 685263948 is 849362586.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 685263948.

It is not an unprimeable number, because it can be changed into a prime (685263941) 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, 26148 + ... + 45323.

It is an arithmetic number, because the mean of its divisors is an integer number (36021888).

Almost surely, 2^685263948 is an apocalyptic number.

685263948 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

685263948 is an abundant number, since it is smaller than the sum of its proper divisors (1043786676).

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

685263948 is a wasteful number, since it uses less digits than its factorization.

685263948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71542 (or 71540 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The square root of 685263948 is about 26177.5466382929. The cubic root of 685263948 is about 881.6291909525.

The spelling of 685263948 in words is "six hundred eighty-five million, two hundred sixty-three thousand, nine hundred forty-eight".