61628807 has 2 divisors, whose sum is σ = 61628808. Its totient is φ = 61628806.

The previous prime is 61628803. The next prime is 61628813. The reversal of 61628807 is 70882616.

61628807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61628807 - 2² = 61628803 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61628803) 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, 30814403 + 30814404.

It is an arithmetic number, because the mean of its divisors is an integer number (30814404).

Almost surely, 2^61628807 is an apocalyptic number.

61628807 is a deficient number, since it is larger than the sum of its proper divisors (1).

61628807 is an equidigital number, since it uses as much as digits as its factorization.

61628807 is an odious number, because the sum of its binary digits is odd.

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

The square root of 61628807 is about 7850.4017094668. The cubic root of 61628807 is about 394.9977183012.

The spelling of 61628807 in words is "sixty-one million, six hundred twenty-eight thousand, eight hundred seven".