77150729 has 4 divisors (see below), whose sum is σ = 78944976. Its totient is φ = 75356484.

The previous prime is 77150693. The next prime is 77150737. The reversal of 77150729 is 92705177.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77150729 - 2¹² = 77146633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77150692 and 77150701.

It is not an unprimeable number, because it can be changed into a prime (77150779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 897059 + ... + 897144.

It is an arithmetic number, because the mean of its divisors is an integer number (19736244).

Almost surely, 2^77150729 is an apocalyptic number.

It is an amenable number.

77150729 is a deficient number, since it is larger than the sum of its proper divisors (1794247).

77150729 is a wasteful number, since it uses less digits than its factorization.

77150729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794246.

The product of its (nonzero) digits is 30870, while the sum is 38.

The square root of 77150729 is about 8783.5487702864. The cubic root of 77150729 is about 425.7095027732.

The spelling of 77150729 in words is "seventy-seven million, one hundred fifty thousand, seven hundred twenty-nine".