77000019 has 16 divisors (see below), whose sum is σ = 104242944. Its totient is φ = 50551200.

The previous prime is 77000003. The next prime is 77000029. The reversal of 77000019 is 91000077.

It is not a de Polignac number, because 77000019 - 2⁴ = 77000003 is a prime.

It is a super-2 number, since 2×77000019² = 11858005852000722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77000029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64609 + ... + 65789.

It is an arithmetic number, because the mean of its divisors is an integer number (6515184).

Almost surely, 2^77000019 is an apocalyptic number.

77000019 is a deficient number, since it is larger than the sum of its proper divisors (27242925).

77000019 is a wasteful number, since it uses less digits than its factorization.

77000019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498.

The product of its (nonzero) digits is 441, while the sum is 24.

The square root of 77000019 is about 8774.9654700175. The cubic root of 77000019 is about 425.4321215037.

The spelling of 77000019 in words is "seventy-seven million, nineteen", and thus it is an aban number and an uban number.