77070673 has 4 divisors (see below), whose sum is σ = 81604260. Its totient is φ = 72537088.

The previous prime is 77070649. The next prime is 77070683. The reversal of 77070673 is 37607077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37607077 = 17 ⋅2212181.

It can be written as a sum of positive squares in 2 ways, for example, as 54346384 + 22724289 = 7372^2 + 4767^2 .

It is a cyclic number.

It is not a de Polignac number, because 77070673 - 2⁵ = 77070641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77070613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2266768 + ... + 2266801.

It is an arithmetic number, because the mean of its divisors is an integer number (20401065).

Almost surely, 2^77070673 is an apocalyptic number.

It is an amenable number.

77070673 is a deficient number, since it is larger than the sum of its proper divisors (4533587).

77070673 is a wasteful number, since it uses less digits than its factorization.

77070673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533586.

The product of its (nonzero) digits is 43218, while the sum is 37.

The square root of 77070673 is about 8778.9904317068. The cubic root of 77070673 is about 425.5622049871.

It can be divided in two parts, 7 and 7070673, that added together give a triangular number (7070680 = T₃₇₆₀).

The spelling of 77070673 in words is "seventy-seven million, seventy thousand, six hundred seventy-three".