3671720 has 64 divisors (see below), whose sum is σ = 9313920. Its totient is φ = 1292544.

The previous prime is 3671669. The next prime is 3671761. The reversal of 3671720 is 271763.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 3671720.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11807 + ... + 12113.

It is an arithmetic number, because the mean of its divisors is an integer number (145530).

Almost surely, 2^3671720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3671720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4656960).

3671720 is an abundant number, since it is smaller than the sum of its proper divisors (5642200).

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

3671720 is a wasteful number, since it uses less digits than its factorization.

3671720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 3671720 is about 1916.1732698271. The cubic root of 3671720 is about 154.2729739953.

The spelling of 3671720 in words is "three million, six hundred seventy-one thousand, seven hundred twenty".