61577434 has 16 divisors (see below), whose sum is σ = 97948008. Its totient is φ = 28933632.

The previous prime is 61577389. The next prime is 61577437. The reversal of 61577434 is 43477516.

It can be written as a sum of positive squares in 4 ways, for example, as 61575409 + 2025 = 7847^2 + 45^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61577393 and 61577402.

It is not an unprimeable number, because it can be changed into a prime (61577437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36334 + ... + 37990.

Almost surely, 2^61577434 is an apocalyptic number.

61577434 is a deficient number, since it is larger than the sum of its proper divisors (36370574).

61577434 is a wasteful number, since it uses less digits than its factorization.

61577434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2769.

The product of its digits is 70560, while the sum is 37.

The square root of 61577434 is about 7847.1290291418. The cubic root of 61577434 is about 394.8879327435.

The spelling of 61577434 in words is "sixty-one million, five hundred seventy-seven thousand, four hundred thirty-four".