61626349 has 4 divisors (see below), whose sum is σ = 63291964. Its totient is φ = 59960736.

The previous prime is 61626347. The next prime is 61626371. The reversal of 61626349 is 94362616.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21557449 + 40068900 = 4643^2 + 6330^2 .

It is a cyclic number.

It is not a de Polignac number, because 61626349 - 2¹ = 61626347 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 1665577 = 61626349 / (6 + 1 + 6 + 2 + 6 + 3 + 4 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61626347) 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, 832752 + ... + 832825.

It is an arithmetic number, because the mean of its divisors is an integer number (15822991).

Almost surely, 2^61626349 is an apocalyptic number.

It is an amenable number.

61626349 is a deficient number, since it is larger than the sum of its proper divisors (1665615).

61626349 is a wasteful number, since it uses less digits than its factorization.

61626349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665614.

The product of its digits is 46656, while the sum is 37.

The square root of 61626349 is about 7850.2451554076. The cubic root of 61626349 is about 394.9924668755.

The spelling of 61626349 in words is "sixty-one million, six hundred twenty-six thousand, three hundred forty-nine".