61650605 has 16 divisors (see below), whose sum is σ = 77324544. Its totient is φ = 47140800.

The previous prime is 61650601. The next prime is 61650623. The reversal of 61650605 is 50605616.

It is not a de Polignac number, because 61650605 - 2² = 61650601 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 (61650601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7055 + ... + 13155.

It is an arithmetic number, because the mean of its divisors is an integer number (4832784).

Almost surely, 2^61650605 is an apocalyptic number.

It is an amenable number.

61650605 is a deficient number, since it is larger than the sum of its proper divisors (15673939).

61650605 is a wasteful number, since it uses less digits than its factorization.

61650605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6196.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 61650605 is about 7851.7899233232. The cubic root of 61650605 is about 395.0442828097.

The spelling of 61650605 in words is "sixty-one million, six hundred fifty thousand, six hundred five".