61332478 has 4 divisors (see below), whose sum is σ = 91998720. Its totient is φ = 30666238.

The previous prime is 61332473. The next prime is 61332487. The reversal of 61332478 is 87423316.

It is a happy number.

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 (61332473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15333118 + ... + 15333121.

It is an arithmetic number, because the mean of its divisors is an integer number (22999680).

Almost surely, 2^61332478 is an apocalyptic number.

61332478 is a deficient number, since it is larger than the sum of its proper divisors (30666242).

61332478 is a wasteful number, since it uses less digits than its factorization.

61332478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30666241.

The product of its digits is 24192, while the sum is 34.

The square root of 61332478 is about 7831.5054746837. The cubic root of 61332478 is about 394.3636134104.

The spelling of 61332478 in words is "sixty-one million, three hundred thirty-two thousand, four hundred seventy-eight".