61610649 has 8 divisors (see below), whose sum is σ = 82184160. Its totient is φ = 41055456.

The previous prime is 61610641. The next prime is 61610657. The reversal of 61610649 is 94601616.

61610649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61610641) and next prime (61610657).

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

It is not a de Polignac number, because 61610649 - 2³ = 61610641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61610641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9174 + ... + 14400.

It is an arithmetic number, because the mean of its divisors is an integer number (10273020).

Almost surely, 2^61610649 is an apocalyptic number.

It is an amenable number.

61610649 is a deficient number, since it is larger than the sum of its proper divisors (20573511).

61610649 is a wasteful number, since it uses less digits than its factorization.

61610649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9159.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 61610649 is about 7849.2451229402. The cubic root of 61610649 is about 394.9589211139.

The spelling of 61610649 in words is "sixty-one million, six hundred ten thousand, six hundred forty-nine".