1012621 has 4 divisors (see below), whose sum is σ = 1056672. Its totient is φ = 968572.

The previous prime is 1012619. The next prime is 1012631. The reversal of 1012621 is 1262101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1012621 - 2¹ = 1012619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012601) 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 3 ways as a sum of consecutive naturals, for example, 21991 + ... + 22036.

It is an arithmetic number, because the mean of its divisors is an integer number (264168).

2^1012621 is an apocalyptic number.

It is an amenable number.

1012621 is a deficient number, since it is larger than the sum of its proper divisors (44051).

1012621 is an equidigital number, since it uses as much as digits as its factorization.

1012621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44050.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1012621 is about 1006.2907134621. The cubic root of 1012621 is about 100.4189424215.

Adding to 1012621 its reverse (1262101), we get a palindrome (2274722).

The spelling of 1012621 in words is "one million, twelve thousand, six hundred twenty-one".