1010621 has 4 divisors (see below), whose sum is σ = 1045500. Its totient is φ = 975744.

The previous prime is 1010617. The next prime is 1010623. The reversal of 1010621 is 1260101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1260101 = 23 ⋅54787.

It can be written as a sum of positive squares in 2 ways, for example, as 225625 + 784996 = 475^2 + 886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010621 - 2² = 1010617 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 (1010623) 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, 17396 + ... + 17453.

It is an arithmetic number, because the mean of its divisors is an integer number (261375).

2^1010621 is an apocalyptic number.

It is an amenable number.

1010621 is a deficient number, since it is larger than the sum of its proper divisors (34879).

1010621 is an equidigital number, since it uses as much as digits as its factorization.

1010621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34878.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1010621 is about 1005.2964736833. The cubic root of 1010621 is about 100.3527872811.

Adding to 1010621 its reverse (1260101), we get a palindrome (2270722).

It can be divided in two parts, 10106 and 21, that multiplied together give a triangular number (212226 = T₆₅₁).

The spelling of 1010621 in words is "one million, ten thousand, six hundred twenty-one".