685418948 has 24 divisors (see below), whose sum is σ = 1222651584. Its totient is φ = 336140000.

The previous prime is 685418933. The next prime is 685418963. The reversal of 685418948 is 849814586.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (685418933) and next prime (685418963).

It is a self number, because there is not a number n which added to its sum of digits gives 685418948.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49823 + ... + 62073.

It is an arithmetic number, because the mean of its divisors is an integer number (50943816).

Almost surely, 2^685418948 is an apocalyptic number.

It is an amenable number.

685418948 is a deficient number, since it is larger than the sum of its proper divisors (537232636).

685418948 is a wasteful number, since it uses less digits than its factorization.

685418948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12523 (or 12521 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 53.

The square root of 685418948 is about 26180.5070233561. The cubic root of 685418948 is about 881.6956579069.

The spelling of 685418948 in words is "six hundred eighty-five million, four hundred eighteen thousand, nine hundred forty-eight".