61610077 has 4 divisors (see below), whose sum is σ = 64288800. Its totient is φ = 58931356.

The previous prime is 61610071. The next prime is 61610083. The reversal of 61610077 is 77001616.

61610077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (61610071) and next prime (61610083).

It is a cyclic number.

It is not a de Polignac number, because 61610077 - 2¹⁹ = 61085789 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 (61610071) 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 3 ways as a sum of consecutive naturals, for example, 1339327 + ... + 1339372.

It is an arithmetic number, because the mean of its divisors is an integer number (16072200).

Almost surely, 2^61610077 is an apocalyptic number.

It is an amenable number.

61610077 is a deficient number, since it is larger than the sum of its proper divisors (2678723).

61610077 is a wasteful number, since it uses less digits than its factorization.

61610077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2678722.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 61610077 is about 7849.2086862307. The cubic root of 61610077 is about 394.9576988296.

The spelling of 61610077 in words is "sixty-one million, six hundred ten thousand, seventy-seven".