61880749 has 8 divisors (see below), whose sum is σ = 70777728. Its totient is φ = 52998000.

The previous prime is 61880747. The next prime is 61880771. The reversal of 61880749 is 94708816.

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 61880749 - 2¹ = 61880747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61880747) 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, 8499 + ... + 13999.

It is an arithmetic number, because the mean of its divisors is an integer number (8847216).

Almost surely, 2^61880749 is an apocalyptic number.

It is an amenable number.

61880749 is a deficient number, since it is larger than the sum of its proper divisors (8896979).

61880749 is a wasteful number, since it uses less digits than its factorization.

61880749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7115.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 61880749 is about 7866.4317832166. The cubic root of 61880749 is about 395.5352440539.

The spelling of 61880749 in words is "sixty-one million, eight hundred eighty thousand, seven hundred forty-nine".