61671610 has 128 divisors (see below), whose sum is σ = 152990208. Its totient is φ = 17280000.

The previous prime is 61671607. The next prime is 61671613. The reversal of 61671610 is 1617616.

61671610 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61671607) and next prime (61671613).

It is not an unprimeable number, because it can be changed into a prime (61671613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 610560 + ... + 610660.

It is an arithmetic number, because the mean of its divisors is an integer number (1195236).

Almost surely, 2^61671610 is an apocalyptic number.

61671610 is an abundant number, since it is smaller than the sum of its proper divisors (91318598).

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

61671610 is a wasteful number, since it uses less digits than its factorization.

61671610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 61671610 is about 7853.1274025066. The cubic root of 61671610 is about 395.0891429423.

It can be divided in two parts, 6167 and 1610, that added together give a palindrome (7777).

The spelling of 61671610 in words is "sixty-one million, six hundred seventy-one thousand, six hundred ten".