1264621 has 8 divisors (see below), whose sum is σ = 1346400. Its totient is φ = 1184400.

The previous prime is 1264607. The next prime is 1264643.

1264621 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1264621 - 2¹³ = 1256429 is a prime.

It is a Duffinian number.

1264621 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1264592 and 1264601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264651) 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 7 ways as a sum of consecutive naturals, for example, 1590 + ... + 2248.

It is an arithmetic number, because the mean of its divisors is an integer number (168300).

2^1264621 is an apocalyptic number.

It is an amenable number.

1264621 is a deficient number, since it is larger than the sum of its proper divisors (81779).

1264621 is a wasteful number, since it uses less digits than its factorization.

1264621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779.

The product of its digits is 576, while the sum is 22.

The square root of 1264621 is about 1124.5536892474. The cubic root of 1264621 is about 108.1401073704.

The spelling of 1264621 in words is "one million, two hundred sixty-four thousand, six hundred twenty-one".