611121064 has 8 divisors (see below), whose sum is σ = 1145852010. Its totient is φ = 305560528.

The previous prime is 611121061. The next prime is 611121101. The reversal of 611121064 is 460121116.

It can be written as a sum of positive squares in only one way, i.e., 406344964 + 204776100 = 20158^2 + 14310^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (611121061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38195059 + ... + 38195074.

Almost surely, 2^611121064 is an apocalyptic number.

It is an amenable number.

611121064 is a deficient number, since it is larger than the sum of its proper divisors (534730946).

611121064 is a wasteful number, since it uses less digits than its factorization.

611121064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76390139 (or 76390135 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 611121064 is about 24720.8629299222. The cubic root of 611121064 is about 848.6118352116.

The spelling of 611121064 in words is "six hundred eleven million, one hundred twenty-one thousand, sixty-four".