61940765 has 4 divisors (see below), whose sum is σ = 74328924. Its totient is φ = 49552608.

The previous prime is 61940731. The next prime is 61940773. The reversal of 61940765 is 56704916.

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 24019801 + 37920964 = 4901^2 + 6158^2 .

It is a cyclic number.

It is not a de Polignac number, because 61940765 - 2¹⁰ = 61939741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6194072 + ... + 6194081.

It is an arithmetic number, because the mean of its divisors is an integer number (18582231).

Almost surely, 2^61940765 is an apocalyptic number.

It is an amenable number.

61940765 is a deficient number, since it is larger than the sum of its proper divisors (12388159).

61940765 is a wasteful number, since it uses less digits than its factorization.

61940765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12388158.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 61940765 is about 7870.2455489013. The cubic root of 61940765 is about 395.6630747247.

The spelling of 61940765 in words is "sixty-one million, nine hundred forty thousand, seven hundred sixty-five".