671627340 has 72 divisors (see below), whose sum is σ = 2066002848. Its totient is φ = 176574720.

The previous prime is 671627339. The next prime is 671627351. The reversal of 671627340 is 43726176.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 671627295 and 671627304.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13497 + ... + 39056.

It is an arithmetic number, because the mean of its divisors is an integer number (28694484).

Almost surely, 2^671627340 is an apocalyptic number.

671627340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

671627340 is an abundant number, since it is smaller than the sum of its proper divisors (1394375508).

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

671627340 is a wasteful number, since it uses less digits than its factorization.

671627340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52639 (or 52634 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 671627340 is about 25915.7739610454. The cubic root of 671627340 is about 875.7418861734.

The spelling of 671627340 in words is "six hundred seventy-one million, six hundred twenty-seven thousand, three hundred forty".