77632734 has 16 divisors (see below), whose sum is σ = 159462288. Its totient is φ = 25178112.

The previous prime is 77632733. The next prime is 77632769. The reversal of 77632734 is 43723677.

It is a junction number, because it is equal to n+sod(n) for n = 77632692 and 77632701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77632733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174627 + ... + 175070.

It is an arithmetic number, because the mean of its divisors is an integer number (9966393).

Almost surely, 2^77632734 is an apocalyptic number.

77632734 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

77632734 is an abundant number, since it is smaller than the sum of its proper divisors (81829554).

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

77632734 is a wasteful number, since it uses less digits than its factorization.

77632734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349739.

The product of its digits is 148176, while the sum is 39.

The square root of 77632734 is about 8810.9439902884. The cubic root of 77632734 is about 426.5942136359.

The spelling of 77632734 in words is "seventy-seven million, six hundred thirty-two thousand, seven hundred thirty-four".