61645062 has 8 divisors (see below), whose sum is σ = 123290136. Its totient is φ = 20548352.

The previous prime is 61645061. The next prime is 61645079. The reversal of 61645062 is 26054616.

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

61645062 is an admirable number.

It is a super-2 number, since 2×61645062² = 7600227337967688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61645061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5137083 + ... + 5137094.

It is an arithmetic number, because the mean of its divisors is an integer number (15411267).

Almost surely, 2^61645062 is an apocalyptic number.

61645062 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61645062 is a wasteful number, since it uses less digits than its factorization.

61645062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10274182.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 61645062 is about 7851.4369385483. The cubic root of 61645062 is about 395.0324429903.

Adding to 61645062 its reverse (26054616), we get a palindrome (87699678).

The spelling of 61645062 in words is "sixty-one million, six hundred forty-five thousand, sixty-two".