671022540 has 36 divisors (see below), whose sum is σ = 2035435584. Its totient is φ = 178939296.

The previous prime is 671022481. The next prime is 671022557. The reversal of 671022540 is 45220176.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1863772 + ... + 1864131.

Almost surely, 2^671022540 is an apocalyptic number.

671022540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

671022540 is an abundant number, since it is smaller than the sum of its proper divisors (1364413044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671022540 is a wasteful number, since it uses less digits than its factorization.

671022540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3727918 (or 3727913 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 671022540 is about 25904.1027638480. The cubic root of 671022540 is about 875.4789388892.

The spelling of 671022540 in words is "six hundred seventy-one million, twenty-two thousand, five hundred forty".