712987236 has 144 divisors (see below), whose sum is σ = 2058987840. Its totient is φ = 206219520.

The previous prime is 712987213. The next prime is 712987237. The reversal of 712987236 is 632789217.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 712987191 and 712987200.

It is not an unprimeable number, because it can be changed into a prime (712987237) 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, 1609231 + ... + 1609673.

Almost surely, 2^712987236 is an apocalyptic number.

712987236 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 712987236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1029493920).

712987236 is an abundant number, since it is smaller than the sum of its proper divisors (1346000604).

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

712987236 is a wasteful number, since it uses less digits than its factorization.

712987236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 661 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 712987236 is about 26701.8208367894. The cubic root of 712987236 is about 893.3615398510.

The spelling of 712987236 in words is "seven hundred twelve million, nine hundred eighty-seven thousand, two hundred thirty-six".