77740534 has 8 divisors (see below), whose sum is σ = 117203328. Its totient is φ = 38672760.

The previous prime is 77740511. The next prime is 77740549. The reversal of 77740534 is 43504777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 77740493 and 77740502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98262 + ... + 99049.

It is an arithmetic number, because the mean of its divisors is an integer number (14650416).

Almost surely, 2^77740534 is an apocalyptic number.

77740534 is a deficient number, since it is larger than the sum of its proper divisors (39462794).

77740534 is a wasteful number, since it uses less digits than its factorization.

77740534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197510.

The product of its (nonzero) digits is 82320, while the sum is 37.

The square root of 77740534 is about 8817.0592603203. The cubic root of 77740534 is about 426.7915770617.

The spelling of 77740534 in words is "seventy-seven million, seven hundred forty thousand, five hundred thirty-four".