7621401 has 8 divisors (see below), whose sum is σ = 10328704. Its totient is φ = 4997520.

The previous prime is 7621399. The next prime is 7621409. The reversal of 7621401 is 1041267.

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

It is not a de Polignac number, because 7621401 - 2¹ = 7621399 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 (7621409) 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 7 ways as a sum of consecutive naturals, for example, 20641 + ... + 21006.

It is an arithmetic number, because the mean of its divisors is an integer number (1291088).

Almost surely, 2^7621401 is an apocalyptic number.

It is an amenable number.

7621401 is a deficient number, since it is larger than the sum of its proper divisors (2707303).

7621401 is a wasteful number, since it uses less digits than its factorization.

7621401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41711.

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

The square root of 7621401 is about 2760.6885010808. The cubic root of 7621401 is about 196.7938871705.

Adding to 7621401 its reverse (1041267), we get a palindrome (8662668).

The spelling of 7621401 in words is "seven million, six hundred twenty-one thousand, four hundred one".