61789849 has 8 divisors (see below), whose sum is σ = 71372448. Its totient is φ = 52868160.

The previous prime is 61789801. The next prime is 61789867. The reversal of 61789849 is 94898716.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61789849 - 2²¹ = 59692697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61789796 and 61789805.

It is not an unprimeable number, because it can be changed into a prime (61789549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165027 + ... + 165400.

It is an arithmetic number, because the mean of its divisors is an integer number (8921556).

Almost surely, 2^61789849 is an apocalyptic number.

It is an amenable number.

61789849 is a deficient number, since it is larger than the sum of its proper divisors (9582599).

61789849 is a wasteful number, since it uses less digits than its factorization.

61789849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330455.

The product of its digits is 870912, while the sum is 52.

The square root of 61789849 is about 7860.6519449725. The cubic root of 61789849 is about 395.3414747279.

The spelling of 61789849 in words is "sixty-one million, seven hundred eighty-nine thousand, eight hundred forty-nine".