61046947 has 4 divisors (see below), whose sum is σ = 65742880. Its totient is φ = 56351016.

The previous prime is 61046941. The next prime is 61046957. The reversal of 61046947 is 74964016.

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

It is a cyclic number.

It is not a de Polignac number, because 61046947 - 2⁷ = 61046819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61046941) by changing a digit.

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, 2347947 + ... + 2347972.

It is an arithmetic number, because the mean of its divisors is an integer number (16435720).

Almost surely, 2^61046947 is an apocalyptic number.

61046947 is a deficient number, since it is larger than the sum of its proper divisors (4695933).

61046947 is a wasteful number, since it uses less digits than its factorization.

61046947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4695932.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 61046947 is about 7813.2545715598. The cubic root of 61046947 is about 393.7506796998.

The spelling of 61046947 in words is "sixty-one million, forty-six thousand, nine hundred forty-seven".