61016631 has 16 divisors (see below), whose sum is σ = 91424256. Its totient is φ = 35915616.

The previous prime is 61016617. The next prime is 61016633. The reversal of 61016631 is 13661016.

61016631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61016631 - 2⁶ = 61016567 is a prime.

It is a super-2 number, since 2×61016631² = 7446058517180322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61016633) 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 15 ways as a sum of consecutive naturals, for example, 33115 + ... + 34908.

It is an arithmetic number, because the mean of its divisors is an integer number (5714016).

Almost surely, 2^61016631 is an apocalyptic number.

61016631 is a deficient number, since it is larger than the sum of its proper divisors (30407625).

61016631 is a wasteful number, since it uses less digits than its factorization.

61016631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68062.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 61016631 is about 7811.3142940225. The cubic root of 61016631 is about 393.6854898599.

Adding to 61016631 its reverse (13661016), we get a palindrome (74677647).

The spelling of 61016631 in words is "sixty-one million, sixteen thousand, six hundred thirty-one".