77560534 has 4 divisors (see below), whose sum is σ = 116340804. Its totient is φ = 38780266.

The previous prime is 77560523. The next prime is 77560537. The reversal of 77560534 is 43506577.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 77560493 and 77560502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77560537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19390132 + ... + 19390135.

It is an arithmetic number, because the mean of its divisors is an integer number (29085201).

Almost surely, 2^77560534 is an apocalyptic number.

77560534 is a deficient number, since it is larger than the sum of its proper divisors (38780270).

77560534 is a wasteful number, since it uses less digits than its factorization.

77560534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38780269.

The product of its (nonzero) digits is 88200, while the sum is 37.

The square root of 77560534 is about 8806.8458598979. The cubic root of 77560534 is about 426.4619255584.

The spelling of 77560534 in words is "seventy-seven million, five hundred sixty thousand, five hundred thirty-four".