61674143 has 4 divisors (see below), whose sum is σ = 61708488. Its totient is φ = 61639800.

The previous prime is 61674073. The next prime is 61674163. The reversal of 61674143 is 34147616.

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 61674143 - 2¹⁶ = 61608607 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 (61674163) 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, 14321 + ... + 18122.

It is an arithmetic number, because the mean of its divisors is an integer number (15427122).

Almost surely, 2^61674143 is an apocalyptic number.

61674143 is a deficient number, since it is larger than the sum of its proper divisors (34345).

61674143 is a wasteful number, since it uses less digits than its factorization.

61674143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34344.

The product of its digits is 12096, while the sum is 32.

The square root of 61674143 is about 7853.2886741798. The cubic root of 61674143 is about 395.0945519525.

The spelling of 61674143 in words is "sixty-one million, six hundred seventy-four thousand, one hundred forty-three".