866487372 has 24 divisors (see below), whose sum is σ = 2109709056. Its totient is φ = 276271248.

The previous prime is 866487341. The next prime is 866487373. The reversal of 866487372 is 273784668.

It is not an unprimeable number, because it can be changed into a prime (866487373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1569448 + ... + 1569999.

It is an arithmetic number, because the mean of its divisors is an integer number (87904544).

Almost surely, 2^866487372 is an apocalyptic number.

It is an amenable number.

866487372 is an abundant number, since it is smaller than the sum of its proper divisors (1243221684).

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

866487372 is a wasteful number, since it uses less digits than its factorization.

866487372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139477 (or 3139475 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 51.

The square root of 866487372 is about 29436.1575617471. The cubic root of 866487372 is about 953.3537501401.

The spelling of 866487372 in words is "eight hundred sixty-six million, four hundred eighty-seven thousand, three hundred seventy-two".