7661489 has 8 divisors (see below), whose sum is σ = 8411232. Its totient is φ = 6920640.

The previous prime is 7661483. The next prime is 7661491. The reversal of 7661489 is 9841667.

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 7661489 - 2⁴ = 7661473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7661483) 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, 344 + ... + 3929.

It is an arithmetic number, because the mean of its divisors is an integer number (1051404).

Almost surely, 2^7661489 is an apocalyptic number.

It is an amenable number.

7661489 is a deficient number, since it is larger than the sum of its proper divisors (749743).

7661489 is a wasteful number, since it uses less digits than its factorization.

7661489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4447.

The product of its digits is 72576, while the sum is 41.

The square root of 7661489 is about 2767.9394863327. The cubic root of 7661489 is about 197.1383243524.

The spelling of 7661489 in words is "seven million, six hundred sixty-one thousand, four hundred eighty-nine".