61680583 has 4 divisors (see below), whose sum is σ = 61711888. Its totient is φ = 61649280.

The previous prime is 61680581. The next prime is 61680643. The reversal of 61680583 is 38508616.

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 61680583 - 2¹ = 61680581 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 (61680581) 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, 12483 + ... + 16708.

It is an arithmetic number, because the mean of its divisors is an integer number (15427972).

Almost surely, 2^61680583 is an apocalyptic number.

61680583 is a deficient number, since it is larger than the sum of its proper divisors (31305).

61680583 is a wasteful number, since it uses less digits than its factorization.

61680583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31304.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 61680583 is about 7853.6986827863. The cubic root of 61680583 is about 395.1083033683.

It can be divided in two parts, 61680 and 583, that multiplied together give a triangular number (35959440 = T₈₄₈₀).

The spelling of 61680583 in words is "sixty-one million, six hundred eighty thousand, five hundred eighty-three".