61672904 has 8 divisors (see below), whose sum is σ = 115636710. Its totient is φ = 30836448.

The previous prime is 61672873. The next prime is 61672909. The reversal of 61672904 is 40927616.

61672904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 39564100 + 22108804 = 6290^2 + 4702^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (61672909) 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 as a sum of consecutive naturals, namely, 3854549 + ... + 3854564.

Almost surely, 2^61672904 is an apocalyptic number.

It is an amenable number.

61672904 is a deficient number, since it is larger than the sum of its proper divisors (53963806).

61672904 is a wasteful number, since it uses less digits than its factorization.

61672904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7709119 (or 7709115 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 61672904 is about 7853.2097896338. The cubic root of 61672904 is about 395.0919061899.

The spelling of 61672904 in words is "sixty-one million, six hundred seventy-two thousand, nine hundred four".