3662261 has 4 divisors (see below), whose sum is σ = 3703500. Its totient is φ = 3621024.

The previous prime is 3662249. The next prime is 3662311. The reversal of 3662261 is 1622663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1622663 = 7 ⋅231809.

It can be written as a sum of positive squares in 2 ways, for example, as 532900 + 3129361 = 730^2 + 1769^2 .

It is a cyclic number.

It is not a de Polignac number, because 3662261 - 2¹⁴ = 3645877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3662261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3662201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20486 + ... + 20663.

It is an arithmetic number, because the mean of its divisors is an integer number (925875).

Almost surely, 2^3662261 is an apocalyptic number.

It is an amenable number.

3662261 is a deficient number, since it is larger than the sum of its proper divisors (41239).

3662261 is an equidigital number, since it uses as much as digits as its factorization.

3662261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41238.

The product of its digits is 2592, while the sum is 26.

The square root of 3662261 is about 1913.7034775534. The cubic root of 3662261 is about 154.1403819160.

The spelling of 3662261 in words is "three million, six hundred sixty-two thousand, two hundred sixty-one".