861412802 has 8 divisors (see below), whose sum is σ = 1292391612. Its totient is φ = 430615600.

The previous prime is 861412787. The next prime is 861412817. The reversal of 861412802 is 208214168.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (861412787) and next prime (861412817).

It can be written as a sum of positive squares in 2 ways, for example, as 671276281 + 190136521 = 25909^2 + 13789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32849 + ... + 52932.

Almost surely, 2^861412802 is an apocalyptic number.

861412802 is a deficient number, since it is larger than the sum of its proper divisors (430978810).

861412802 is a wasteful number, since it uses less digits than its factorization.

861412802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90804.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 861412802 is about 29349.8347865878. The cubic root of 861412802 is about 951.4890045670.

The spelling of 861412802 in words is "eight hundred sixty-one million, four hundred twelve thousand, eight hundred two".