2661953 has 8 divisors (see below), whose sum is σ = 3062208. Its totient is φ = 2266704.

The previous prime is 2661949. The next prime is 2661959. The reversal of 2661953 is 3591662.

It is a happy number.

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 2661953 - 2² = 2661949 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2661959) 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, 26 + ... + 2307.

It is an arithmetic number, because the mean of its divisors is an integer number (382776).

2^2661953 is an apocalyptic number.

It is an amenable number.

2661953 is a deficient number, since it is larger than the sum of its proper divisors (400255).

2661953 is a wasteful number, since it uses less digits than its factorization.

2661953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503.

The product of its digits is 9720, while the sum is 32.

The square root of 2661953 is about 1631.5492637368. The cubic root of 2661953 is about 138.5904998323.

The spelling of 2661953 in words is "two million, six hundred sixty-one thousand, nine hundred fifty-three".