61375663 has 4 divisors (see below), whose sum is σ = 62803048. Its totient is φ = 59948280.

The previous prime is 61375651. The next prime is 61375679. The reversal of 61375663 is 36657316.

61375663 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.

It is a cyclic number.

It is not a de Polignac number, because 61375663 - 2⁵ = 61375631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61375463) 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, 713628 + ... + 713713.

It is an arithmetic number, because the mean of its divisors is an integer number (15700762).

Almost surely, 2^61375663 is an apocalyptic number.

61375663 is a deficient number, since it is larger than the sum of its proper divisors (1427385).

61375663 is a wasteful number, since it uses less digits than its factorization.

61375663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427384.

The product of its digits is 68040, while the sum is 37.

The square root of 61375663 is about 7834.2621222423. The cubic root of 61375663 is about 394.4561505545.

The spelling of 61375663 in words is "sixty-one million, three hundred seventy-five thousand, six hundred sixty-three".