61739825 has 24 divisors (see below), whose sum is σ = 88744320. Its totient is φ = 41731200.

The previous prime is 61739819. The next prime is 61739831. The reversal of 61739825 is 52893716.

61739825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61739819) and next prime (61739831).

It is not a de Polignac number, because 61739825 - 2⁶ = 61739761 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 9941 + ... + 14909.

It is an arithmetic number, because the mean of its divisors is an integer number (3697680).

Almost surely, 2^61739825 is an apocalyptic number.

It is an amenable number.

61739825 is a deficient number, since it is larger than the sum of its proper divisors (27004495).

61739825 is a wasteful number, since it uses less digits than its factorization.

61739825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5057 (or 5052 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 61739825 is about 7857.4693763323. The cubic root of 61739825 is about 395.2347587027.

The spelling of 61739825 in words is "sixty-one million, seven hundred thirty-nine thousand, eight hundred twenty-five".