671737243 has 16 divisors (see below), whose sum is σ = 700128000. Its totient is φ = 644114592.

The previous prime is 671737193. The next prime is 671737247. The reversal of 671737243 is 342737176.

It is a cyclic number.

It is not a de Polignac number, because 671737243 - 2²¹ = 669640091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671737196 and 671737205.

It is not an unprimeable number, because it can be changed into a prime (671737247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430098 + ... + 431656.

It is an arithmetic number, because the mean of its divisors is an integer number (43758000).

Almost surely, 2^671737243 is an apocalyptic number.

671737243 is a deficient number, since it is larger than the sum of its proper divisors (28390757).

671737243 is a wasteful number, since it uses less digits than its factorization.

671737243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794.

The product of its digits is 148176, while the sum is 40.

The square root of 671737243 is about 25917.8942624589. The cubic root of 671737243 is about 875.7896514570.

The spelling of 671737243 in words is "six hundred seventy-one million, seven hundred thirty-seven thousand, two hundred forty-three".