7661229 has 8 divisors (see below), whose sum is σ = 10232352. Its totient is φ = 5098800.

The previous prime is 7661221. The next prime is 7661233. The reversal of 7661229 is 9221667.

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

It is not a de Polignac number, because 7661229 - 2³ = 7661221 is a prime.

7661229 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7661229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7661221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282 + ... + 3924.

It is an arithmetic number, because the mean of its divisors is an integer number (1279044).

Almost surely, 2^7661229 is an apocalyptic number.

It is an amenable number.

7661229 is a deficient number, since it is larger than the sum of its proper divisors (2571123).

7661229 is a wasteful number, since it uses less digits than its factorization.

7661229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347.

The product of its digits is 9072, while the sum is 33.

The square root of 7661229 is about 2767.8925195896. The cubic root of 7661229 is about 197.1360943010.

The spelling of 7661229 in words is "seven million, six hundred sixty-one thousand, two hundred twenty-nine".