671022555 has 32 divisors (see below), whose sum is σ = 1299193344. Its totient is φ = 288708096.

The previous prime is 671022481. The next prime is 671022557. The reversal of 671022555 is 555220176.

It is not a de Polignac number, because 671022555 - 2⁹ = 671022043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671022557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186177 + ... + 189746.

It is an arithmetic number, because the mean of its divisors is an integer number (40599792).

Almost surely, 2^671022555 is an apocalyptic number.

671022555 is a deficient number, since it is larger than the sum of its proper divisors (628170789).

671022555 is a wasteful number, since it uses less digits than its factorization.

671022555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375955.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 671022555 is about 25904.1030533775. The cubic root of 671022555 is about 875.4789454127.

The spelling of 671022555 in words is "six hundred seventy-one million, twenty-two thousand, five hundred fifty-five".