87450913 has 8 divisors (see below), whose sum is σ = 96745536. Its totient is φ = 78380400.

The previous prime is 87450893. The next prime is 87450917. The reversal of 87450913 is 31905478.

87450913 = T₃₉₈₂ + T₃₉₈₃ + ... + T₃₉₉₂.

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 87450913 - 2¹³ = 87442721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87450917) 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, 55206 + ... + 56767.

It is an arithmetic number, because the mean of its divisors is an integer number (12093192).

Almost surely, 2^87450913 is an apocalyptic number.

It is an amenable number.

87450913 is a deficient number, since it is larger than the sum of its proper divisors (9294623).

87450913 is a wasteful number, since it uses less digits than its factorization.

87450913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112055.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 87450913 is about 9351.5192883296. The cubic root of 87450913 is about 443.8689671637.

The spelling of 87450913 in words is "eighty-seven million, four hundred fifty thousand, nine hundred thirteen".