7161649 has 8 divisors (see below), whose sum is σ = 7832160. Its totient is φ = 6494400.

The previous prime is 7161629. The next prime is 7161653. The reversal of 7161649 is 9461617.

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

It is not a de Polignac number, because 7161649 - 2⁹ = 7161137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7161619) 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, 7689 + ... + 8569.

It is an arithmetic number, because the mean of its divisors is an integer number (979020).

Almost surely, 2^7161649 is an apocalyptic number.

It is an amenable number.

7161649 is a deficient number, since it is larger than the sum of its proper divisors (670511).

7161649 is a wasteful number, since it uses less digits than its factorization.

7161649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631.

The product of its digits is 9072, while the sum is 34.

The square root of 7161649 is about 2676.1257444298. The cubic root of 7161649 is about 192.7544193168.

Subtracting 7161649 from its reverse (9461617), we obtain a cube (2299968 = 132³).

The spelling of 7161649 in words is "seven million, one hundred sixty-one thousand, six hundred forty-nine".