61700245 has 8 divisors (see below), whose sum is σ = 74804184. Its totient is φ = 48850944.

The previous prime is 61700209. The next prime is 61700251. The reversal of 61700245 is 54200716.

It can be written as a sum of positive squares in 4 ways, for example, as 579121 + 61121124 = 761^2 + 7818^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61700245 - 2⁷ = 61700117 is a prime.

It is a Duffinian number.

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, 63124 + ... + 64093.

It is an arithmetic number, because the mean of its divisors is an integer number (9350523).

Almost surely, 2^61700245 is an apocalyptic number.

It is an amenable number.

61700245 is a deficient number, since it is larger than the sum of its proper divisors (13103939).

61700245 is a wasteful number, since it uses less digits than its factorization.

61700245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127319.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 61700245 is about 7854.9503499386. The cubic root of 61700245 is about 395.1502819714.

The spelling of 61700245 in words is "sixty-one million, seven hundred thousand, two hundred forty-five".