77887073 has 8 divisors (see below), whose sum is σ = 85060416. Its totient is φ = 70729200.

The previous prime is 77887027. The next prime is 77887079. The reversal of 77887073 is 37078877.

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

It is a cyclic number.

It is not a de Polignac number, because 77887073 - 2⁶ = 77887009 is a prime.

It is a super-2 number, since 2×77887073² = 12132792281014658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77887079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8363 + ... + 15023.

It is an arithmetic number, because the mean of its divisors is an integer number (10632552).

Almost surely, 2^77887073 is an apocalyptic number.

It is an amenable number.

77887073 is a deficient number, since it is larger than the sum of its proper divisors (7173343).

77887073 is a wasteful number, since it uses less digits than its factorization.

77887073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7735.

The product of its (nonzero) digits is 460992, while the sum is 47.

The square root of 77887073 is about 8825.3653182177. The cubic root of 77887073 is about 427.0595726291.

The spelling of 77887073 in words is "seventy-seven million, eight hundred eighty-seven thousand, seventy-three".