671173092 has 18 divisors (see below), whose sum is σ = 1696576518. Its totient is φ = 223724352.

The previous prime is 671173031. The next prime is 671173121. The reversal of 671173092 is 290371176.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 544475556 + 126697536 = 23334^2 + 11256^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 18643697 = 671173092 / (6 + 7 + 1 + 1 + 7 + 3 + 0 + 9 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9321813 + ... + 9321884.

It is an arithmetic number, because the mean of its divisors is an integer number (94254251).

Almost surely, 2^671173092 is an apocalyptic number.

It is an amenable number.

671173092 is an abundant number, since it is smaller than the sum of its proper divisors (1025403426).

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

671173092 is a wasteful number, since it uses less digits than its factorization.

671173092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18643707 (or 18643702 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 671173092 is about 25907.0085498114. The cubic root of 671173092 is about 875.5444087462.

The spelling of 671173092 in words is "six hundred seventy-one million, one hundred seventy-three thousand, ninety-two".