61087623 has 4 divisors (see below), whose sum is σ = 81450168. Its totient is φ = 40725080.

The previous prime is 61087591. The next prime is 61087643. The reversal of 61087623 is 32678016.

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

It is a cyclic number.

It is not a de Polignac number, because 61087623 - 2⁵ = 61087591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61087643) 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, 10181268 + ... + 10181273.

It is an arithmetic number, because the mean of its divisors is an integer number (20362542).

Almost surely, 2^61087623 is an apocalyptic number.

61087623 is a deficient number, since it is larger than the sum of its proper divisors (20362545).

61087623 is a wasteful number, since it uses less digits than its factorization.

61087623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20362544.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 61087623 is about 7815.8571506905. The cubic root of 61087623 is about 393.8381132108.

It can be divided in two parts, 6108 and 7623, that added together give a palindrome (13731).

The spelling of 61087623 in words is "sixty-one million, eighty-seven thousand, six hundred twenty-three".