61628373 has 6 divisors (see below), whose sum is σ = 89018774. Its totient is φ = 41085576.

The previous prime is 61628353. The next prime is 61628423. The reversal of 61628373 is 37382616.

It is a happy number.

61628373 is a `hidden beast` number, since 616 + 2 + 8 + 37 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 61355889 + 272484 = 7833^2 + 522^2 .

It is not a de Polignac number, because 61628373 - 2⁹ = 61627861 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 (61628353) 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 5 ways as a sum of consecutive naturals, for example, 3423790 + ... + 3423807.

Almost surely, 2^61628373 is an apocalyptic number.

It is an amenable number.

61628373 is a deficient number, since it is larger than the sum of its proper divisors (27390401).

61628373 is a wasteful number, since it uses less digits than its factorization.

61628373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6847603 (or 6847600 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 61628373 is about 7850.3740675206. The cubic root of 61628373 is about 394.9967910865.

It can be divided in two parts, 61628 and 373, that added together give a square (62001 = 249²).

The spelling of 61628373 in words is "sixty-one million, six hundred twenty-eight thousand, three hundred seventy-three".