671652937 has 4 divisors (see below), whose sum is σ = 673345156. Its totient is φ = 669960720.

The previous prime is 671652911. The next prime is 671652967. The reversal of 671652937 is 739256176.

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

It can be written as a sum of positive squares in 2 ways, for example, as 541213696 + 130439241 = 23264^2 + 11421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671652937 is a prime.

It is a super-2 number, since 2×671652937² = 902235335561451938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671652967) 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, 845514 + ... + 846307.

It is an arithmetic number, because the mean of its divisors is an integer number (168336289).

Almost surely, 2^671652937 is an apocalyptic number.

It is an amenable number.

671652937 is a deficient number, since it is larger than the sum of its proper divisors (1692219).

671652937 is a wasteful number, since it uses less digits than its factorization.

671652937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692218.

The product of its digits is 476280, while the sum is 46.

The square root of 671652937 is about 25916.2678061483. The cubic root of 671652937 is about 875.7530114304.

The spelling of 671652937 in words is "six hundred seventy-one million, six hundred fifty-two thousand, nine hundred thirty-seven".