77397506 has 8 divisors (see below), whose sum is σ = 118796304. Its totient is φ = 37798740.

The previous prime is 77397503. The next prime is 77397511. The reversal of 77397506 is 60579377.

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

It is not an unprimeable number, because it can be changed into a prime (77397503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449900 + ... + 450071.

It is an arithmetic number, because the mean of its divisors is an integer number (14849538).

Almost surely, 2^77397506 is an apocalyptic number.

77397506 is a deficient number, since it is larger than the sum of its proper divisors (41398798).

77397506 is a wasteful number, since it uses less digits than its factorization.

77397506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900016.

The product of its (nonzero) digits is 277830, while the sum is 44.

The square root of 77397506 is about 8797.5852368704. The cubic root of 77397506 is about 426.1629160797.

The spelling of 77397506 in words is "seventy-seven million, three hundred ninety-seven thousand, five hundred six".