61807628 has 6 divisors (see below), whose sum is σ = 108163356. Its totient is φ = 30903812.

The previous prime is 61807621. The next prime is 61807643. The reversal of 61807628 is 82670816.

61807628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61807591 and 61807600.

It is not an unprimeable number, because it can be changed into a prime (61807621) 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, 7725950 + ... + 7725957.

It is an arithmetic number, because the mean of its divisors is an integer number (18027226).

Almost surely, 2^61807628 is an apocalyptic number.

It is an amenable number.

61807628 is a deficient number, since it is larger than the sum of its proper divisors (46355728).

61807628 is a wasteful number, since it uses less digits than its factorization.

61807628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15451911 (or 15451909 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 61807628 is about 7861.7827494786. The cubic root of 61807628 is about 395.3793887335.

The spelling of 61807628 in words is "sixty-one million, eight hundred seven thousand, six hundred twenty-eight".