3654990 has 32 divisors (see below), whose sum is σ = 9747360. Its totient is φ = 974592.

The previous prime is 3654961. The next prime is 3654997. The reversal of 3654990 is 994563.

3654990 = T₂₅₉ + T₂₆₀ + ... + T₃₃₉.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3654997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6499 + ... + 7038.

It is an arithmetic number, because the mean of its divisors is an integer number (304605).

Almost surely, 2^3654990 is an apocalyptic number.

3654990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3654990 is an abundant number, since it is smaller than the sum of its proper divisors (6092370).

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

3654990 is a wasteful number, since it uses less digits than its factorization.

3654990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13553 (or 13547 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 3654990 is about 1911.8028140998. The cubic root of 3654990 is about 154.0383049708.

The spelling of 3654990 in words is "three million, six hundred fifty-four thousand, nine hundred ninety".