671023654 has 8 divisors (see below), whose sum is σ = 1150326288. Its totient is φ = 287581560.

The previous prime is 671023649. The next prime is 671023657. The reversal of 671023654 is 456320176.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671023657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23965117 + ... + 23965144.

It is an arithmetic number, because the mean of its divisors is an integer number (143790786).

Almost surely, 2^671023654 is an apocalyptic number.

671023654 is a deficient number, since it is larger than the sum of its proper divisors (479302634).

671023654 is a wasteful number, since it uses less digits than its factorization.

671023654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47930270.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 671023654 is about 25904.1242662245. The cubic root of 671023654 is about 875.4794233652.

It can be divided in two parts, 67102 and 3654, that added together give a square (70756 = 266²).

The spelling of 671023654 in words is "six hundred seventy-one million, twenty-three thousand, six hundred fifty-four".