61363775 has 24 divisors (see below), whose sum is σ = 83458944. Its totient is φ = 44386400.

The previous prime is 61363769. The next prime is 61363777. The reversal of 61363775 is 57736316.

It is not a de Polignac number, because 61363775 - 2¹⁸ = 61101631 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61363777) 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, 61934 + ... + 62916.

It is an arithmetic number, because the mean of its divisors is an integer number (3477456).

Almost surely, 2^61363775 is an apocalyptic number.

61363775 is a deficient number, since it is larger than the sum of its proper divisors (22095169).

61363775 is a wasteful number, since it uses less digits than its factorization.

61363775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1226 counting only the distinct ones).

The product of its digits is 79380, while the sum is 38.

The square root of 61363775 is about 7833.5033669489. The cubic root of 61363775 is about 394.4306811893.

The spelling of 61363775 in words is "sixty-one million, three hundred sixty-three thousand, seven hundred seventy-five".