61890767 has 4 divisors (see below), whose sum is σ = 61962216. Its totient is φ = 61819320.

The previous prime is 61890757. The next prime is 61890779. The reversal of 61890767 is 76709816.

61890767 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 61890767 - 2²⁰ = 60842191 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61890707) 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, 34409 + ... + 36162.

It is an arithmetic number, because the mean of its divisors is an integer number (15490554).

Almost surely, 2^61890767 is an apocalyptic number.

61890767 is a deficient number, since it is larger than the sum of its proper divisors (71449).

61890767 is an equidigital number, since it uses as much as digits as its factorization.

61890767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71448.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 61890767 is about 7867.0685137477. The cubic root of 61890767 is about 395.5565875698.

The spelling of 61890767 in words is "sixty-one million, eight hundred ninety thousand, seven hundred sixty-seven".