61650651 has 4 divisors (see below), whose sum is σ = 82200872. Its totient is φ = 41100432.

The previous prime is 61650637. The next prime is 61650679. The reversal of 61650651 is 15605616.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61650651 - 2⁶ = 61650587 is a prime.

It is a super-3 number, since 3×61650651³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61650601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10275106 + ... + 10275111.

It is an arithmetic number, because the mean of its divisors is an integer number (20550218).

Almost surely, 2^61650651 is an apocalyptic number.

61650651 is a deficient number, since it is larger than the sum of its proper divisors (20550221).

61650651 is a wasteful number, since it uses less digits than its factorization.

61650651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20550220.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 61650651 is about 7851.7928525911. The cubic root of 61650651 is about 395.0443810625.

The spelling of 61650651 in words is "sixty-one million, six hundred fifty thousand, six hundred fifty-one".