61506146 has 8 divisors (see below), whose sum is σ = 99356124. Its totient is φ = 28387440.

The previous prime is 61506131. The next prime is 61506167. The reversal of 61506146 is 64160516.

It can be written as a sum of positive squares in 2 ways, for example, as 53860921 + 7645225 = 7339^2 + 2765^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1182785 + ... + 1182836.

Almost surely, 2^61506146 is an apocalyptic number.

61506146 is a deficient number, since it is larger than the sum of its proper divisors (37849978).

61506146 is a wasteful number, since it uses less digits than its factorization.

61506146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365636.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 61506146 is about 7842.5854155374. The cubic root of 61506146 is about 394.7354870640.

The spelling of 61506146 in words is "sixty-one million, five hundred six thousand, one hundred forty-six".