61775461 has 12 divisors (see below), whose sum is σ = 68164096. Its totient is φ = 55942920.

The previous prime is 61775453. The next prime is 61775503. The reversal of 61775461 is 16457716.

It is not a de Polignac number, because 61775461 - 2³ = 61775453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61775461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61775411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36316 + ... + 37978.

Almost surely, 2^61775461 is an apocalyptic number.

It is an amenable number.

61775461 is a deficient number, since it is larger than the sum of its proper divisors (6388635).

61775461 is a wasteful number, since it uses less digits than its factorization.

61775461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992 (or 1981 counting only the distinct ones).

The product of its digits is 35280, while the sum is 37.

The square root of 61775461 is about 7859.7367004245. The cubic root of 61775461 is about 395.3107867601.

The spelling of 61775461 in words is "sixty-one million, seven hundred seventy-five thousand, four hundred sixty-one".