61880671 has 4 divisors (see below), whose sum is σ = 61909344. Its totient is φ = 61852000.

The previous prime is 61880659. The next prime is 61880677. The reversal of 61880671 is 17608816.

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 61880671 - 2⁵ = 61880639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61880671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61880677) 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, 10810 + ... + 15511.

It is an arithmetic number, because the mean of its divisors is an integer number (15477336).

Almost surely, 2^61880671 is an apocalyptic number.

61880671 is a deficient number, since it is larger than the sum of its proper divisors (28673).

61880671 is a wasteful number, since it uses less digits than its factorization.

61880671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28672.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 61880671 is about 7866.4268254399. The cubic root of 61880671 is about 395.5350778645.

The spelling of 61880671 in words is "sixty-one million, eight hundred eighty thousand, six hundred seventy-one".