3661740 has 48 divisors (see below), whose sum is σ = 11393760. Its totient is φ = 976320.

The previous prime is 3661739. The next prime is 3661759. The reversal of 3661740 is 471663.

3661740 is a `hidden beast` number, since 3 + 6 + 617 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 2851 + ... + 3930.

It is an arithmetic number, because the mean of its divisors is an integer number (237370).

Almost surely, 2^3661740 is an apocalyptic number.

3661740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3661740 is an abundant number, since it is smaller than the sum of its proper divisors (7732020).

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

3661740 is a wasteful number, since it uses less digits than its factorization.

3661740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6799 (or 6791 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 3661740 is about 1913.5673492198. The cubic root of 3661740 is about 154.1330721378.

It can be divided in two parts, 36 and 61740, that added together give a triangular number (61776 = T₃₅₁).

The spelling of 3661740 in words is "three million, six hundred sixty-one thousand, seven hundred forty".