655249741 has 4 divisors (see below), whose sum is σ = 671231484. Its totient is φ = 639268000.

The previous prime is 655249729. The next prime is 655249747. The reversal of 655249741 is 147942556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 153041641 + 502208100 = 12371^2 + 22410^2 .

It is a cyclic number.

It is not a de Polignac number, because 655249741 - 2⁵ = 655249709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655249747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7990810 + ... + 7990891.

It is an arithmetic number, because the mean of its divisors is an integer number (167807871).

Almost surely, 2^655249741 is an apocalyptic number.

It is an amenable number.

655249741 is a deficient number, since it is larger than the sum of its proper divisors (15981743).

655249741 is a wasteful number, since it uses less digits than its factorization.

655249741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15981742.

The product of its digits is 302400, while the sum is 43.

The square root of 655249741 is about 25597.8464133216. The cubic root of 655249741 is about 868.5649221805.

The spelling of 655249741 in words is "six hundred fifty-five million, two hundred forty-nine thousand, seven hundred forty-one".