61884671 has 4 divisors (see below), whose sum is σ = 61943952. Its totient is φ = 61825392.

The previous prime is 61884661. The next prime is 61884673. The reversal of 61884671 is 17648816.

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 61884671 - 2¹⁸ = 61622527 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 (61884673) 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, 28046 + ... + 30171.

It is an arithmetic number, because the mean of its divisors is an integer number (15485988).

Almost surely, 2^61884671 is an apocalyptic number.

61884671 is a deficient number, since it is larger than the sum of its proper divisors (59281).

61884671 is a wasteful number, since it uses less digits than its factorization.

61884671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59280.

The product of its digits is 64512, while the sum is 41.

The square root of 61884671 is about 7866.6810663710. The cubic root of 61884671 is about 395.5436002146.

The spelling of 61884671 in words is "sixty-one million, eight hundred eighty-four thousand, six hundred seventy-one".