61623533 has 16 divisors (see below), whose sum is σ = 65270016. Its totient is φ = 58114560.

The previous prime is 61623493. The next prime is 61623539. The reversal of 61623533 is 33532616.

It is a happy number.

It is not a de Polignac number, because 61623533 - 2¹⁴ = 61607149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61623496 and 61623505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61623539) 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, 217610 + ... + 217892.

It is an arithmetic number, because the mean of its divisors is an integer number (4079376).

Almost surely, 2^61623533 is an apocalyptic number.

It is an amenable number.

61623533 is a deficient number, since it is larger than the sum of its proper divisors (3646483).

61623533 is a wasteful number, since it uses less digits than its factorization.

61623533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484.

The product of its digits is 9720, while the sum is 29.

The square root of 61623533 is about 7850.0657959026. The cubic root of 61623533 is about 394.9864504245.

The spelling of 61623533 in words is "sixty-one million, six hundred twenty-three thousand, five hundred thirty-three".