611485761 has 4 divisors (see below), whose sum is σ = 815314352. Its totient is φ = 407657172.

The previous prime is 611485753. The next prime is 611485789. The reversal of 611485761 is 167584116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 611485761 - 2³ = 611485753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611485711) 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, 101914291 + ... + 101914296.

It is an arithmetic number, because the mean of its divisors is an integer number (203828588).

Almost surely, 2^611485761 is an apocalyptic number.

It is an amenable number.

611485761 is a deficient number, since it is larger than the sum of its proper divisors (203828591).

611485761 is a wasteful number, since it uses less digits than its factorization.

611485761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203828590.

The product of its digits is 40320, while the sum is 39.

The square root of 611485761 is about 24728.2381297172. The cubic root of 611485761 is about 848.7806095431.

The spelling of 611485761 in words is "six hundred eleven million, four hundred eighty-five thousand, seven hundred sixty-one".