993863685 has 48 divisors (see below), whose sum is σ = 1710440064. Its totient is φ = 492545664.

The previous prime is 993863681. The next prime is 993863693. The reversal of 993863685 is 586368399.

It is not a de Polignac number, because 993863685 - 2² = 993863681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993863681) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 285264 + ... + 288726.

It is an arithmetic number, because the mean of its divisors is an integer number (35634168).

Almost surely, 2^993863685 is an apocalyptic number.

993863685 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

993863685 is a deficient number, since it is larger than the sum of its proper divisors (716576379).

993863685 is a wasteful number, since it uses less digits than its factorization.

993863685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562 (or 3543 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 57.

The square root of 993863685 is about 31525.6036421192. The cubic root of 993863685 is about 997.9503635272.

The spelling of 993863685 in words is "nine hundred ninety-three million, eight hundred sixty-three thousand, six hundred eighty-five".