61720248 has 32 divisors (see below), whose sum is σ = 155088000. Its totient is φ = 20468448.

The previous prime is 61720237. The next prime is 61720271. The reversal of 61720248 is 84202716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1686 + ... + 11237.

It is an arithmetic number, because the mean of its divisors is an integer number (4846500).

Almost surely, 2^61720248 is an apocalyptic number.

It is an amenable number.

61720248 is an abundant number, since it is smaller than the sum of its proper divisors (93367752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61720248 is a wasteful number, since it uses less digits than its factorization.

61720248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13131 (or 13127 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 61720248 is about 7856.2235202418. The cubic root of 61720248 is about 395.1929794630.

The spelling of 61720248 in words is "sixty-one million, seven hundred twenty thousand, two hundred forty-eight".