61749361 has 8 divisors (see below), whose sum is σ = 62307648. Its totient is φ = 61194000.

The previous prime is 61749353. The next prime is 61749367. The reversal of 61749361 is 16394716.

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 61749361 - 2³ = 61749353 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 61749361.

It is not an unprimeable number, because it can be changed into a prime (61749367) 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, 65151 + ... + 66091.

It is an arithmetic number, because the mean of its divisors is an integer number (7788456).

Almost surely, 2^61749361 is an apocalyptic number.

It is an amenable number.

61749361 is a deficient number, since it is larger than the sum of its proper divisors (558287).

61749361 is a wasteful number, since it uses less digits than its factorization.

61749361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463.

The product of its digits is 27216, while the sum is 37.

The square root of 61749361 is about 7858.0761640493. The cubic root of 61749361 is about 395.2551062640.

The spelling of 61749361 in words is "sixty-one million, seven hundred forty-nine thousand, three hundred sixty-one".