61020745 has 8 divisors (see below), whose sum is σ = 73329984. Its totient is φ = 48746544.

The previous prime is 61020731. The next prime is 61020779. The reversal of 61020745 is 54702016.

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 61020745 - 2⁹ = 61020233 is a prime.

It is a Duffinian 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, 4759 + ... + 12028.

It is an arithmetic number, because the mean of its divisors is an integer number (9166248).

Almost surely, 2^61020745 is an apocalyptic number.

It is an amenable number.

61020745 is a deficient number, since it is larger than the sum of its proper divisors (12309239).

61020745 is a wasteful number, since it uses less digits than its factorization.

61020745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17519.

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

The square root of 61020745 is about 7811.5776255504. The cubic root of 61020745 is about 393.6943376427.

The spelling of 61020745 in words is "sixty-one million, twenty thousand, seven hundred forty-five".