61523633 has 4 divisors (see below), whose sum is σ = 62088180. Its totient is φ = 60959088.

The previous prime is 61523617. The next prime is 61523647. The reversal of 61523633 is 33632516.

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 51739249 + 9784384 = 7193^2 + 3128^2 .

It is a cyclic number.

It is not a de Polignac number, because 61523633 - 2⁴ = 61523617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61523596 and 61523605.

It is not an unprimeable number, because it can be changed into a prime (61523603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282110 + ... + 282327.

It is an arithmetic number, because the mean of its divisors is an integer number (15522045).

Almost surely, 2^61523633 is an apocalyptic number.

It is an amenable number.

61523633 is a deficient number, since it is larger than the sum of its proper divisors (564547).

61523633 is a wasteful number, since it uses less digits than its factorization.

61523633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564546.

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

The square root of 61523633 is about 7843.7002109974. The cubic root of 61523633 is about 394.7728930028.

The spelling of 61523633 in words is "sixty-one million, five hundred twenty-three thousand, six hundred thirty-three".