61423580 has 24 divisors (see below), whose sum is σ = 135779280. Its totient is φ = 23276160.

The previous prime is 61423573. The next prime is 61423597. The reversal of 61423580 is 8532416.

It is a congruent number.

It is an unprimeable number.

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, 80441 + ... + 81200.

It is an arithmetic number, because the mean of its divisors is an integer number (5657470).

Almost surely, 2^61423580 is an apocalyptic number.

It is an amenable number.

61423580 is an abundant number, since it is smaller than the sum of its proper divisors (74355700).

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

61423580 is a wasteful number, since it uses less digits than its factorization.

61423580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161669 (or 161667 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 61423580 is about 7837.3196948957. The cubic root of 61423580 is about 394.5587766756.

Adding to 61423580 its reverse (8532416), we get a palindrome (69955996).

The spelling of 61423580 in words is "sixty-one million, four hundred twenty-three thousand, five hundred eighty".