61631167 has 8 divisors (see below), whose sum is σ = 67460960. Its totient is φ = 55956960.

The previous prime is 61631153. The next prime is 61631189. The reversal of 61631167 is 76113616.

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

It is a cyclic number.

It is not a de Polignac number, because 61631167 - 2⁷ = 61631039 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 (61631267) 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 7 ways as a sum of consecutive naturals, for example, 38067 + ... + 39652.

It is an arithmetic number, because the mean of its divisors is an integer number (8432620).

Almost surely, 2^61631167 is an apocalyptic number.

61631167 is a deficient number, since it is larger than the sum of its proper divisors (5829793).

61631167 is a wasteful number, since it uses less digits than its factorization.

61631167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77793.

The product of its digits is 4536, while the sum is 31.

The square root of 61631167 is about 7850.5520188073. The cubic root of 61631167 is about 395.0027602221.

The spelling of 61631167 in words is "sixty-one million, six hundred thirty-one thousand, one hundred sixty-seven".