611540256 has 48 divisors (see below), whose sum is σ = 1644457248. Its totient is φ = 198873600.

The previous prime is 611540231. The next prime is 611540257. The reversal of 611540256 is 652045116.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (611540257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73750 + ... + 81621.

It is an arithmetic number, because the mean of its divisors is an integer number (34259526).

Almost surely, 2^611540256 is an apocalyptic number.

It is an amenable number.

611540256 is an abundant number, since it is smaller than the sum of its proper divisors (1032916992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

611540256 is a wasteful number, since it uses less digits than its factorization.

611540256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155425 (or 155417 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 611540256 is about 24729.3399831051. The cubic root of 611540256 is about 848.8058229541.

The spelling of 611540256 in words is "six hundred eleven million, five hundred forty thousand, two hundred fifty-six".