61584494 has 4 divisors (see below), whose sum is σ = 92376744. Its totient is φ = 30792246.

The previous prime is 61584493. The next prime is 61584499. The reversal of 61584494 is 49448516.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61584493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15396122 + ... + 15396125.

It is an arithmetic number, because the mean of its divisors is an integer number (23094186).

Almost surely, 2^61584494 is an apocalyptic number.

61584494 is a deficient number, since it is larger than the sum of its proper divisors (30792250).

61584494 is a wasteful number, since it uses less digits than its factorization.

61584494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30792249.

The product of its digits is 138240, while the sum is 41.

The square root of 61584494 is about 7847.5788622989. The cubic root of 61584494 is about 394.9030237819.

The spelling of 61584494 in words is "sixty-one million, five hundred eighty-four thousand, four hundred ninety-four".