61380617 has 4 divisors (see below), whose sum is σ = 63497220. Its totient is φ = 59264016.

The previous prime is 61380611. The next prime is 61380619. The reversal of 61380617 is 71608316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16168441 + 45212176 = 4021^2 + 6724^2 .

It is a cyclic number.

It is not a de Polignac number, because 61380617 - 2¹² = 61376521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61380611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058258 + ... + 1058315.

It is an arithmetic number, because the mean of its divisors is an integer number (15874305).

Almost surely, 2^61380617 is an apocalyptic number.

It is an amenable number.

61380617 is a deficient number, since it is larger than the sum of its proper divisors (2116603).

61380617 is a wasteful number, since it uses less digits than its factorization.

61380617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116602.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 61380617 is about 7834.5782911399. The cubic root of 61380617 is about 394.4667632474.

The spelling of 61380617 in words is "sixty-one million, three hundred eighty thousand, six hundred seventeen".