61672164 has 12 divisors (see below), whose sum is σ = 143901744. Its totient is φ = 20557384.

The previous prime is 61672151. The next prime is 61672189. The reversal of 61672164 is 46127616.

61672164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2569662 + ... + 2569685.

It is an arithmetic number, because the mean of its divisors is an integer number (11991812).

Almost surely, 2^61672164 is an apocalyptic number.

It is an amenable number.

61672164 is an abundant number, since it is smaller than the sum of its proper divisors (82229580).

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

61672164 is a wasteful number, since it uses less digits than its factorization.

61672164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5139354 (or 5139352 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 61672164 is about 7853.1626749992. The cubic root of 61672164 is about 395.0903259758.

The spelling of 61672164 in words is "sixty-one million, six hundred seventy-two thousand, one hundred sixty-four".