87473769 has 8 divisors (see below), whose sum is σ = 117146400. Its totient is φ = 58058496.

The previous prime is 87473759. The next prime is 87473803. The reversal of 87473769 is 96737478.

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

It is not a de Polignac number, because 87473769 - 2¹¹ = 87471721 is a prime.

It is a super-2 number, since 2×87473769² = 15303320526130722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87473719) 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, 63544 + ... + 64905.

It is an arithmetic number, because the mean of its divisors is an integer number (14643300).

Almost surely, 2^87473769 is an apocalyptic number.

It is an amenable number.

87473769 is a deficient number, since it is larger than the sum of its proper divisors (29672631).

87473769 is a wasteful number, since it uses less digits than its factorization.

87473769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128679.

The product of its digits is 1778112, while the sum is 51.

The square root of 87473769 is about 9352.7412559099. The cubic root of 87473769 is about 443.9076333710.

The spelling of 87473769 in words is "eighty-seven million, four hundred seventy-three thousand, seven hundred sixty-nine".