693899136 has 192 divisors, whose sum is σ = 2367281280. Its totient is φ = 198194688.

The previous prime is 693899119. The next prime is 693899137. The reversal of 693899136 is 631998396.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693899137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216135 + ... + 219321.

It is an arithmetic number, because the mean of its divisors is an integer number (12329590).

Almost surely, 2^693899136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 693899136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1183640640).

693899136 is an abundant number, since it is smaller than the sum of its proper divisors (1673382144).

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

693899136 is an equidigital number, since it uses as much as digits as its factorization.

693899136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3223 (or 3199 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 693899136 is about 26341.9653025358. The cubic root of 693899136 is about 885.3169562784.

The spelling of 693899136 in words is "six hundred ninety-three million, eight hundred ninety-nine thousand, one hundred thirty-six".