861448774 has 8 divisors (see below), whose sum is σ = 1296772488. Its totient is φ = 429191280.

The previous prime is 861448727. The next prime is 861448781. The reversal of 861448774 is 477844168.

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

It is a super-2 number, since 2×861448774² = 1484187980452206152, which contains 22 as substring.

It is a congruent number.

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, 765852 + ... + 766975.

It is an arithmetic number, because the mean of its divisors is an integer number (162096561).

Almost surely, 2^861448774 is an apocalyptic number.

861448774 is a deficient number, since it is larger than the sum of its proper divisors (435323714).

861448774 is a wasteful number, since it uses less digits than its factorization.

861448774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533110.

The product of its digits is 1204224, while the sum is 49.

The square root of 861448774 is about 29350.4475945427. The cubic root of 861448774 is about 951.5022488892.

The spelling of 861448774 in words is "eight hundred sixty-one million, four hundred forty-eight thousand, seven hundred seventy-four".