671652501 has 16 divisors (see below), whose sum is σ = 971471424. Its totient is φ = 410304384.

The previous prime is 671652497. The next prime is 671652523. The reversal of 671652501 is 105256176.

It is not a de Polignac number, because 671652501 - 2² = 671652497 is a prime.

It is a super-2 number, since 2×671652501² = 902234164199110002, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671652901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57511 + ... + 68196.

It is an arithmetic number, because the mean of its divisors is an integer number (60716964).

Almost surely, 2^671652501 is an apocalyptic number.

It is an amenable number.

671652501 is a deficient number, since it is larger than the sum of its proper divisors (299818923).

671652501 is a wasteful number, since it uses less digits than its factorization.

671652501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125860.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 671652501 is about 25916.2593944419. The cubic root of 671652501 is about 875.7528219335.

The spelling of 671652501 in words is "six hundred seventy-one million, six hundred fifty-two thousand, five hundred one".