61660053 has 48 divisors (see below), whose sum is σ = 111121920. Its totient is φ = 32078592.

The previous prime is 61660051. The next prime is 61660069. The reversal of 61660053 is 35006616.

61660053 is a `hidden beast` number, since 6 + 1 + 6 + 600 + 53 = 666.

It is not a de Polignac number, because 61660053 - 2¹ = 61660051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61659999 and 61660026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61660051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64225 + ... + 65177.

It is an arithmetic number, because the mean of its divisors is an integer number (2315040).

Almost surely, 2^61660053 is an apocalyptic number.

61660053 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

61660053 is a deficient number, since it is larger than the sum of its proper divisors (49461867).

61660053 is a wasteful number, since it uses less digits than its factorization.

61660053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058 (or 1055 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 61660053 is about 7852.3915465290. The cubic root of 61660053 is about 395.0644620534.

Adding to 61660053 its reverse (35006616), we get a palindrome (96666669).

The spelling of 61660053 in words is "sixty-one million, six hundred sixty thousand, fifty-three".