661044095 has 8 divisors (see below), whose sum is σ = 795096000. Its totient is φ = 527606560.

The previous prime is 661044079. The next prime is 661044103. The reversal of 661044095 is 590440166.

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

It is not a de Polignac number, because 661044095 - 2⁴ = 661044079 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151220 + ... + 155529.

It is an arithmetic number, because the mean of its divisors is an integer number (99387000).

Almost surely, 2^661044095 is an apocalyptic number.

661044095 is a deficient number, since it is larger than the sum of its proper divisors (134051905).

661044095 is a wasteful number, since it uses less digits than its factorization.

661044095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307185.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 661044095 is about 25710.7777984253. Note that the first 4 decimals coincide. The cubic root of 661044095 is about 871.1176436261.

It can be divided in two parts, 6610 and 44095, that added together give a palindrome (50705).

The spelling of 661044095 in words is "six hundred sixty-one million, forty-four thousand, ninety-five".