61000711 has 4 divisors (see below), whose sum is σ = 61028424. Its totient is φ = 60973000.

The previous prime is 61000571. The next prime is 61000727. The reversal of 61000711 is 11700016.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61000711 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 (61000111) 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, 10240 + ... + 15061.

It is an arithmetic number, because the mean of its divisors is an integer number (15257106).

Almost surely, 2^61000711 is an apocalyptic number.

61000711 is a deficient number, since it is larger than the sum of its proper divisors (27713).

61000711 is a wasteful number, since it uses less digits than its factorization.

61000711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27712.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 61000711 is about 7810.2951928848. The cubic root of 61000711 is about 393.6512477302.

Adding to 61000711 its reverse (11700016), we get a palindrome (72700727).

The spelling of 61000711 in words is "sixty-one million, seven hundred eleven", and thus it is an aban number.