61310689 has 8 divisors (see below), whose sum is σ = 67691232. Its totient is φ = 55064640.

The previous prime is 61310671. The next prime is 61310699. The reversal of 61310689 is 98601316.

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 61310689 - 2¹¹ = 61308641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61310629) 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, 32664 + ... + 34489.

It is an arithmetic number, because the mean of its divisors is an integer number (8461404).

Almost surely, 2^61310689 is an apocalyptic number.

It is an amenable number.

61310689 is a deficient number, since it is larger than the sum of its proper divisors (6380543).

61310689 is a wasteful number, since it uses less digits than its factorization.

61310689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67247.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 61310689 is about 7830.1142392688. The cubic root of 61310689 is about 394.3169072888.

The spelling of 61310689 in words is "sixty-one million, three hundred ten thousand, six hundred eighty-nine".