611956 has 6 divisors (see below), whose sum is σ = 1070930. Its totient is φ = 305976.

The previous prime is 611953. The next prime is 611957. The reversal of 611956 is 659116.

611956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 320356 + 291600 = 566^2 + 540^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76491 + ... + 76498.

2⁶¹¹⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

611956 is a deficient number, since it is larger than the sum of its proper divisors (458974).

611956 is a wasteful number, since it uses less digits than its factorization.

611956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152993 (or 152991 counting only the distinct ones).

The product of its digits is 1620, while the sum is 28.

The square root of 611956 is about 782.2761660692. The cubic root of 611956 is about 84.8998127542.

It can be divided in two parts, 61 and 1956, that multiplied together give a triangular number (119316 = T₄₈₈).

The spelling of 611956 in words is "six hundred eleven thousand, nine hundred fifty-six".