7622661 has 4 divisors (see below), whose sum is σ = 10163552. Its totient is φ = 5081772.

The previous prime is 7622639. The next prime is 7622663. The reversal of 7622661 is 1662267.

7622661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1662267 = 3 ⋅554089.

It is not a de Polignac number, because 7622661 - 2¹³ = 7614469 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7622663) 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, 1270441 + ... + 1270446.

It is an arithmetic number, because the mean of its divisors is an integer number (2540888).

Almost surely, 2^7622661 is an apocalyptic number.

It is an amenable number.

7622661 is a deficient number, since it is larger than the sum of its proper divisors (2540891).

7622661 is a wasteful number, since it uses less digits than its factorization.

7622661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540890.

The product of its digits is 6048, while the sum is 30.

The square root of 7622661 is about 2760.9166955922. The cubic root of 7622661 is about 196.8047314862.

It can be divided in two parts, 762266 and 1, that added together give a palindrome (762267).

The spelling of 7622661 in words is "seven million, six hundred twenty-two thousand, six hundred sixty-one".