61671672 has 32 divisors (see below), whose sum is σ = 171310800. Its totient is φ = 20557152.

The previous prime is 61671653. The next prime is 61671677. The reversal of 61671672 is 27617616.

61671672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61671677) 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 7 ways as a sum of consecutive naturals, for example, 142543 + ... + 142974.

Almost surely, 2^61671672 is an apocalyptic number.

It is an amenable number.

61671672 is an abundant number, since it is smaller than the sum of its proper divisors (109639128).

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

61671672 is a wasteful number, since it uses less digits than its factorization.

61671672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285532 (or 285522 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 61671672 is about 7853.1313499775. The cubic root of 61671672 is about 395.0892753399.

The spelling of 61671672 in words is "sixty-one million, six hundred seventy-one thousand, six hundred seventy-two".