61423518 has 32 divisors (see below), whose sum is σ = 132596352. Its totient is φ = 18856800.

The previous prime is 61423507. The next prime is 61423519. The reversal of 61423518 is 81532416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61423519) 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 15 ways as a sum of consecutive naturals, for example, 62773 + ... + 63743.

It is an arithmetic number, because the mean of its divisors is an integer number (4143636).

Almost surely, 2^61423518 is an apocalyptic number.

61423518 is an abundant number, since it is smaller than the sum of its proper divisors (71172834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61423518 is a wasteful number, since it uses less digits than its factorization.

61423518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800.

The product of its digits is 5760, while the sum is 30.

The square root of 61423518 is about 7837.3157394608. The cubic root of 61423518 is about 394.5586439218.

The spelling of 61423518 in words is "sixty-one million, four hundred twenty-three thousand, five hundred eighteen".