77340740 has 24 divisors (see below), whose sum is σ = 165170880. Its totient is φ = 30411488.

The previous prime is 77340737. The next prime is 77340749. The reversal of 77340740 is 4704377.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 77340697 and 77340706.

It is not an unprimeable number, because it can be changed into a prime (77340749) 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, 31592 + ... + 33951.

It is an arithmetic number, because the mean of its divisors is an integer number (6882120).

Almost surely, 2^77340740 is an apocalyptic number.

It is an amenable number.

77340740 is an abundant number, since it is smaller than the sum of its proper divisors (87830140).

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

77340740 is a wasteful number, since it uses less digits than its factorization.

77340740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65611 (or 65609 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 32.

The square root of 77340740 is about 8794.3584188956. The cubic root of 77340740 is about 426.0587030714.

The spelling of 77340740 in words is "seventy-seven million, three hundred forty thousand, seven hundred forty".