61650006 has 32 divisors (see below), whose sum is σ = 135129600. Its totient is φ = 18595680.

The previous prime is 61649989. The next prime is 61650013. The reversal of 61650006 is 60005616.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13075 + ... + 17153.

It is an arithmetic number, because the mean of its divisors is an integer number (4222800).

Almost surely, 2^61650006 is an apocalyptic number.

61650006 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

61650006 is an abundant number, since it is smaller than the sum of its proper divisors (73479594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61650006 is a wasteful number, since it uses less digits than its factorization.

61650006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4324.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 61650006 is about 7851.7517790618. The cubic root of 61650006 is about 395.0430033830.

The spelling of 61650006 in words is "sixty-one million, six hundred fifty thousand, six".