61930765 has 16 divisors (see below), whose sum is σ = 81548208. Its totient is φ = 44868096.

The previous prime is 61930763. The next prime is 61930783. The reversal of 61930765 is 56703916.

It can be written as a sum of positive squares in 8 ways, for example, as 1371241 + 60559524 = 1171^2 + 7782^2 .

It is not a de Polignac number, because 61930765 - 2¹ = 61930763 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 (61930763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5544 + ... + 12433.

It is an arithmetic number, because the mean of its divisors is an integer number (5096763).

Almost surely, 2^61930765 is an apocalyptic number.

61930765 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61930765 is a deficient number, since it is larger than the sum of its proper divisors (19617443).

61930765 is a wasteful number, since it uses less digits than its factorization.

61930765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18048.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 61930765 is about 7869.6102190642. The cubic root of 61930765 is about 395.6417810275.

The spelling of 61930765 in words is "sixty-one million, nine hundred thirty thousand, seven hundred sixty-five".