671652555 has 96 divisors (see below), whose sum is σ = 1326150144. Its totient is φ = 288820224.

The previous prime is 671652533. The next prime is 671652593. The reversal of 671652555 is 555256176.

It is a happy number.

It is not a de Polignac number, because 671652555 - 2⁵ = 671652523 is a prime.

It is a super-2 number, since 2×671652555² = 902234309276056050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1132339 + ... + 1132931.

It is an arithmetic number, because the mean of its divisors is an integer number (13814064).

Almost surely, 2^671652555 is an apocalyptic number.

671652555 is a deficient number, since it is larger than the sum of its proper divisors (654497589).

671652555 is a wasteful number, since it uses less digits than its factorization.

671652555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 698 counting only the distinct ones).

The product of its digits is 315000, while the sum is 42.

The square root of 671652555 is about 25916.2604362589. The cubic root of 671652555 is about 875.7528454033.

The spelling of 671652555 in words is "six hundred seventy-one million, six hundred fifty-two thousand, five hundred fifty-five".