61337749 has 8 divisors (see below), whose sum is σ = 68722848. Its totient is φ = 54254160.

The previous prime is 61337741. The next prime is 61337753. The reversal of 61337749 is 94773316.

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 61337749 - 2³ = 61337741 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 (61337741) 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, 74947 + ... + 75760.

It is an arithmetic number, because the mean of its divisors is an integer number (8590356).

Almost surely, 2^61337749 is an apocalyptic number.

It is an amenable number.

61337749 is a deficient number, since it is larger than the sum of its proper divisors (7385099).

61337749 is a wasteful number, since it uses less digits than its factorization.

61337749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150755.

The product of its digits is 95256, while the sum is 40.

The square root of 61337749 is about 7831.8419927882. The cubic root of 61337749 is about 394.3749104759.

The spelling of 61337749 in words is "sixty-one million, three hundred thirty-seven thousand, seven hundred forty-nine".