77630074 has 4 divisors (see below), whose sum is σ = 116445114. Its totient is φ = 38815036.

The previous prime is 77630053. The next prime is 77630087. The reversal of 77630074 is 47003677.

It is a happy number.

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., 72131049 + 5499025 = 8493^2 + 2345^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19407517 + ... + 19407520.

Almost surely, 2^77630074 is an apocalyptic number.

77630074 is a deficient number, since it is larger than the sum of its proper divisors (38815040).

77630074 is a wasteful number, since it uses less digits than its factorization.

77630074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38815039.

The product of its (nonzero) digits is 24696, while the sum is 34.

The square root of 77630074 is about 8810.7930403568. The cubic root of 77630074 is about 426.5893413202.

The spelling of 77630074 in words is "seventy-seven million, six hundred thirty thousand, seventy-four".