671333040 has 120 divisors (see below), whose sum is σ = 2576659488. Its totient is φ = 153446400.

The previous prime is 671333029. The next prime is 671333041. The reversal of 671333040 is 40333176.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 671332995 and 671333013.

It is not an unprimeable number, because it can be changed into a prime (671333041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61561 + ... + 71640.

Almost surely, 2^671333040 is an apocalyptic number.

671333040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

671333040 is an abundant number, since it is smaller than the sum of its proper divisors (1905326448).

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

671333040 is a wasteful number, since it uses less digits than its factorization.

671333040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133227 (or 133218 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 27.

The square root of 671333040 is about 25910.0953298130. The cubic root of 671333040 is about 875.6139538733.

The spelling of 671333040 in words is "six hundred seventy-one million, three hundred thirty-three thousand, forty".