61672365 has 24 divisors (see below), whose sum is σ = 107104920. Its totient is φ = 32828544.

The previous prime is 61672313. The next prime is 61672367. The reversal of 61672365 is 56327616.

61672365 is a `hidden beast` number, since 616 + 7 + 2 + 36 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2643876 + 59028489 = 1626^2 + 7683^2 .

It is not a de Polignac number, because 61672365 - 2⁶ = 61672301 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61672367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30939 + ... + 32871.

It is an arithmetic number, because the mean of its divisors is an integer number (4462705).

Almost surely, 2^61672365 is an apocalyptic number.

It is an amenable number.

61672365 is a deficient number, since it is larger than the sum of its proper divisors (45432555).

61672365 is a wasteful number, since it uses less digits than its factorization.

61672365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653 (or 2650 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 61672365 is about 7853.1754723806. The cubic root of 61672365 is about 395.0907551973.

The spelling of 61672365 in words is "sixty-one million, six hundred seventy-two thousand, three hundred sixty-five".