61485657 has 8 divisors (see below), whose sum is σ = 83887584. Its totient is φ = 40037088.

The previous prime is 61485643. The next prime is 61485659. The reversal of 61485657 is 75658416.

61485657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61485657 - 2¹² = 61481561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61485659) 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 7 ways as a sum of consecutive naturals, for example, 238188 + ... + 238445.

It is an arithmetic number, because the mean of its divisors is an integer number (10485948).

Almost surely, 2^61485657 is an apocalyptic number.

It is an amenable number.

61485657 is a deficient number, since it is larger than the sum of its proper divisors (22401927).

61485657 is a wasteful number, since it uses less digits than its factorization.

61485657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476679.

The product of its digits is 201600, while the sum is 42.

The square root of 61485657 is about 7841.2790410749. The cubic root of 61485657 is about 394.6916506122.

The spelling of 61485657 in words is "sixty-one million, four hundred eighty-five thousand, six hundred fifty-seven".