61626361 has 4 divisors (see below), whose sum is σ = 64305792. Its totient is φ = 58946932.

The previous prime is 61626347. The next prime is 61626371. The reversal of 61626361 is 16362616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61626361 - 2¹¹ = 61624313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61626371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1339681 + ... + 1339726.

It is an arithmetic number, because the mean of its divisors is an integer number (16076448).

Almost surely, 2^61626361 is an apocalyptic number.

It is an amenable number.

61626361 is a deficient number, since it is larger than the sum of its proper divisors (2679431).

61626361 is a wasteful number, since it uses less digits than its factorization.

61626361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679430.

The product of its digits is 7776, while the sum is 31.

The square root of 61626361 is about 7850.2459197149. The cubic root of 61626361 is about 394.9924925134.

Adding to 61626361 its reverse (16362616), we get a palindrome (77988977).

The spelling of 61626361 in words is "sixty-one million, six hundred twenty-six thousand, three hundred sixty-one".