61630453 has 8 divisors (see below), whose sum is σ = 62904600. Its totient is φ = 60369408.

The previous prime is 61630451. The next prime is 61630483. The reversal of 61630453 is 35403616.

It can be written as a sum of positive squares in 4 ways, for example, as 5650129 + 55980324 = 2377^2 + 7482^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 61630453 - 2¹ = 61630451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61630451) 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 7 ways as a sum of consecutive naturals, for example, 6525 + ... + 12877.

It is an arithmetic number, because the mean of its divisors is an integer number (7863075).

Almost surely, 2^61630453 is an apocalyptic number.

It is an amenable number.

61630453 is a deficient number, since it is larger than the sum of its proper divisors (1274147).

61630453 is a wasteful number, since it uses less digits than its factorization.

61630453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6551.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 61630453 is about 7850.5065441664. The cubic root of 61630453 is about 395.0012348410.

The spelling of 61630453 in words is "sixty-one million, six hundred thirty thousand, four hundred fifty-three".