860341778 has 4 divisors (see below), whose sum is σ = 1290512670. Its totient is φ = 430170888.

The previous prime is 860341759. The next prime is 860341787. The reversal of 860341778 is 877143068.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 453391849 + 406949929 = 21293^2 + 20173^2 .

It is a super-4 number, since 4×860341778⁴ (a number of 37 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215085443 + ... + 215085446.

Almost surely, 2^860341778 is an apocalyptic number.

860341778 is a deficient number, since it is larger than the sum of its proper divisors (430170892).

860341778 is a wasteful number, since it uses less digits than its factorization.

860341778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430170891.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 860341778 is about 29331.5832849166. The cubic root of 860341778 is about 951.0945014142.

The spelling of 860341778 in words is "eight hundred sixty million, three hundred forty-one thousand, seven hundred seventy-eight".