61900170 has 16 divisors (see below), whose sum is σ = 148560480. Its totient is φ = 16506704.

The previous prime is 61900151. The next prime is 61900171. The reversal of 61900170 is 7100916.

It is a self number, because there is not a number n which added to its sum of digits gives 61900170.

It is not an unprimeable number, because it can be changed into a prime (61900171) 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 7 ways as a sum of consecutive naturals, for example, 1031640 + ... + 1031699.

It is an arithmetic number, because the mean of its divisors is an integer number (9285030).

Almost surely, 2^61900170 is an apocalyptic number.

61900170 is an abundant number, since it is smaller than the sum of its proper divisors (86660310).

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

61900170 is a wasteful number, since it uses less digits than its factorization.

61900170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063349.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 61900170 is about 7867.6661088280. Note that the first 3 decimals coincide. The cubic root of 61900170 is about 395.5766187227.

The spelling of 61900170 in words is "sixty-one million, nine hundred thousand, one hundred seventy".