61385313 has 16 divisors (see below), whose sum is σ = 89655552. Its totient is φ = 37050000.

The previous prime is 61385309. The next prime is 61385353. The reversal of 61385313 is 31358316.

It is not a de Polignac number, because 61385313 - 2² = 61385309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61385353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4578 + ... + 11988.

It is an arithmetic number, because the mean of its divisors is an integer number (5603472).

Almost surely, 2^61385313 is an apocalyptic number.

It is an amenable number.

61385313 is a deficient number, since it is larger than the sum of its proper divisors (28270239).

61385313 is a wasteful number, since it uses less digits than its factorization.

61385313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7676.

The product of its digits is 6480, while the sum is 30.

The square root of 61385313 is about 7834.8779824577. The cubic root of 61385313 is about 394.4768227133.

The spelling of 61385313 in words is "sixty-one million, three hundred eighty-five thousand, three hundred thirteen".