77754540 has 48 divisors (see below), whose sum is σ = 218115072. Its totient is φ = 20696256.

The previous prime is 77754527. The next prime is 77754569. The reversal of 77754540 is 4545777.

It is a super-2 number, since 2×77754540² = 12091536981223200, which contains 22 as substring.

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 in 15 ways as a sum of consecutive naturals, for example, 48837 + ... + 50403.

It is an arithmetic number, because the mean of its divisors is an integer number (4544064).

Almost surely, 2^77754540 is an apocalyptic number.

It is an amenable number.

77754540 is an abundant number, since it is smaller than the sum of its proper divisors (140360532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77754540 is a wasteful number, since it uses less digits than its factorization.

77754540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406 (or 2404 counting only the distinct ones).

The product of its (nonzero) digits is 137200, while the sum is 39.

The square root of 77754540 is about 8817.8534802978. The cubic root of 77754540 is about 426.8172062651.

The spelling of 77754540 in words is "seventy-seven million, seven hundred fifty-four thousand, five hundred forty".