61657748 has 12 divisors (see below), whose sum is σ = 108271380. Its totient is φ = 30723072.

The previous prime is 61657747. The next prime is 61657751. The reversal of 61657748 is 84775616.

61657748 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 2 ways, for example, as 58553104 + 3104644 = 7652^2 + 1762^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61657699 and 61657708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61657747) 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 in 3 ways as a sum of consecutive naturals, for example, 25133 + ... + 27476.

It is an arithmetic number, because the mean of its divisors is an integer number (9022615).

Almost surely, 2^61657748 is an apocalyptic number.

It is an amenable number.

61657748 is a deficient number, since it is larger than the sum of its proper divisors (46613632).

61657748 is a wasteful number, since it uses less digits than its factorization.

61657748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52906 (or 52904 counting only the distinct ones).

The product of its digits is 282240, while the sum is 44.

The square root of 61657748 is about 7852.2447745852. The cubic root of 61657748 is about 395.0595391744.

The spelling of 61657748 in words is "sixty-one million, six hundred fifty-seven thousand, seven hundred forty-eight".