3671745 has 72 divisors (see below), whose sum is σ = 7839552. Its totient is φ = 1436160.

The previous prime is 3671669. The next prime is 3671761. The reversal of 3671745 is 5471763.

It is not a de Polignac number, because 3671745 - 2¹⁰ = 3670721 is a prime.

It is a super-2 number, since 2×3671745² = 26963422690050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 215977 + ... + 215993.

Almost surely, 2^3671745 is an apocalyptic number.

3671745 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3671745 is an abundant number, since it is smaller than the sum of its proper divisors (4167807).

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

3671745 is a wasteful number, since it uses less digits than its factorization.

3671745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 43 counting only the distinct ones).

The product of its digits is 17640, while the sum is 33.

The square root of 3671745 is about 1916.1797932344. The cubic root of 3671745 is about 154.2733241324.

It can be divided in two parts, 367 and 1745, that added together give a palindrome (2112).

The spelling of 3671745 in words is "three million, six hundred seventy-one thousand, seven hundred forty-five".