77534146 has 4 divisors (see below), whose sum is σ = 116301222. Its totient is φ = 38767072.

The previous prime is 77534143. The next prime is 77534147. The reversal of 77534146 is 64143577.

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

It can be written as a sum of positive squares in only one way, i.e., 56475225 + 21058921 = 7515^2 + 4589^2 .

It is not an unprimeable number, because it can be changed into a prime (77534143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19383535 + ... + 19383538.

Almost surely, 2^77534146 is an apocalyptic number.

77534146 is a deficient number, since it is larger than the sum of its proper divisors (38767076).

77534146 is a wasteful number, since it uses less digits than its factorization.

77534146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38767075.

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

The square root of 77534146 is about 8805.3475797381. The cubic root of 77534146 is about 426.4135557961.

The spelling of 77534146 in words is "seventy-seven million, five hundred thirty-four thousand, one hundred forty-six".