1407621 has 4 divisors (see below), whose sum is σ = 1876832. Its totient is φ = 938412.

The previous prime is 1407619. The next prime is 1407629. The reversal of 1407621 is 1267041.

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 not a de Polignac number, because 1407621 - 2¹ = 1407619 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1407629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234601 + ... + 234606.

It is an arithmetic number, because the mean of its divisors is an integer number (469208).

2^1407621 is an apocalyptic number.

It is an amenable number.

1407621 is a deficient number, since it is larger than the sum of its proper divisors (469211).

1407621 is an equidigital number, since it uses as much as digits as its factorization.

1407621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469210.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1407621 is about 1186.4320460945. The cubic root of 1407621 is about 112.0715157621.

The spelling of 1407621 in words is "one million, four hundred seven thousand, six hundred twenty-one".