61380845 has 8 divisors (see below), whose sum is σ = 73709664. Its totient is φ = 49069584.

The previous prime is 61380841. The next prime is 61380853. The reversal of 61380845 is 54808316.

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 61380845 - 2² = 61380841 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61380841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5222 + ... + 12248.

It is an arithmetic number, because the mean of its divisors is an integer number (9213708).

Almost surely, 2^61380845 is an apocalyptic number.

It is an amenable number.

61380845 is a deficient number, since it is larger than the sum of its proper divisors (12328819).

61380845 is a wasteful number, since it uses less digits than its factorization.

61380845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8779.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 61380845 is about 7834.5928420053. The cubic root of 61380845 is about 394.4672516660.

The spelling of 61380845 in words is "sixty-one million, three hundred eighty thousand, eight hundred forty-five".