61577263 has 6 divisors (see below), whose sum is σ = 67684232. Its totient is φ = 55979220.

The previous prime is 61577251. The next prime is 61577339. The reversal of 61577263 is 36277516.

It is not a de Polignac number, because 61577263 - 2¹³ = 61569071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61574263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 254331 + ... + 254572.

Almost surely, 2^61577263 is an apocalyptic number.

61577263 is a deficient number, since it is larger than the sum of its proper divisors (6106969).

61577263 is a wasteful number, since it uses less digits than its factorization.

61577263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508925 (or 508914 counting only the distinct ones).

The product of its digits is 52920, while the sum is 37.

The square root of 61577263 is about 7847.1181334296. The cubic root of 61577263 is about 394.8875672097.

The spelling of 61577263 in words is "sixty-one million, five hundred seventy-seven thousand, two hundred sixty-three".