61364997 has 6 divisors (see below), whose sum is σ = 88638342. Its totient is φ = 40909992.

The previous prime is 61364993. The next prime is 61365011. The reversal of 61364997 is 79946316.

It can be written as a sum of positive squares in only one way, i.e., 53714241 + 7650756 = 7329^2 + 2766^2 .

It is not a de Polignac number, because 61364997 - 2² = 61364993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61364993) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3409158 + ... + 3409175.

It is an arithmetic number, because the mean of its divisors is an integer number (14773057).

Almost surely, 2^61364997 is an apocalyptic number.

It is an amenable number.

61364997 is a deficient number, since it is larger than the sum of its proper divisors (27273345).

61364997 is a wasteful number, since it uses less digits than its factorization.

61364997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6818339 (or 6818336 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 61364997 is about 7833.5813648675. The cubic root of 61364997 is about 394.4332994066.

The spelling of 61364997 in words is "sixty-one million, three hundred sixty-four thousand, nine hundred ninety-seven".