77340664 has 8 divisors (see below), whose sum is σ = 145013760. Its totient is φ = 38670328.

The previous prime is 77340661. The next prime is 77340671. The reversal of 77340664 is 46604377.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77340661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4833784 + ... + 4833799.

It is an arithmetic number, because the mean of its divisors is an integer number (18126720).

Almost surely, 2^77340664 is an apocalyptic number.

It is an amenable number.

77340664 is a deficient number, since it is larger than the sum of its proper divisors (67673096).

77340664 is a wasteful number, since it uses less digits than its factorization.

77340664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9667589 (or 9667585 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 77340664 is about 8794.3540979426. The cubic root of 77340664 is about 426.0585635137.

The spelling of 77340664 in words is "seventy-seven million, three hundred forty thousand, six hundred sixty-four".