61720846 has 32 divisors (see below), whose sum is σ = 107557632. Its totient is φ = 26252160.

The previous prime is 61720801. The next prime is 61720849. The reversal of 61720846 is 64802716.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61720849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84535 + ... + 85261.

It is an arithmetic number, because the mean of its divisors is an integer number (3361176).

Almost surely, 2^61720846 is an apocalyptic number.

61720846 is a deficient number, since it is larger than the sum of its proper divisors (45836786).

61720846 is a wasteful number, since it uses less digits than its factorization.

61720846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 61720846 is about 7856.2615791482. The cubic root of 61720846 is about 395.1942557845.

The spelling of 61720846 in words is "sixty-one million, seven hundred twenty thousand, eight hundred forty-six".