2621386 has 4 divisors (see below), whose sum is σ = 3932082. Its totient is φ = 1310692.

The previous prime is 2621371. The next prime is 2621387. The reversal of 2621386 is 6831262.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2621161 + 225 = 1619^2 + 15^2 .

It is not an unprimeable number, because it can be changed into a prime (2621387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655345 + ... + 655348.

2^2621386 is an apocalyptic number.

2621386 is a deficient number, since it is larger than the sum of its proper divisors (1310696).

2621386 is a wasteful number, since it uses less digits than its factorization.

2621386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310695.

The product of its digits is 3456, while the sum is 28.

The square root of 2621386 is about 1619.0694858467. The cubic root of 2621386 is about 137.8828733825.

It can be divided in two parts, 262138 and 6, that added together give a 18-th power (262144 = 2¹⁸).

The spelling of 2621386 in words is "two million, six hundred twenty-one thousand, three hundred eighty-six".