87403065 has 16 divisors (see below), whose sum is σ = 143625408. Its totient is φ = 45354816.

The previous prime is 87403039. The next prime is 87403079. The reversal of 87403065 is 56030478.

87403065 = T₄₉₄ + T₄₉₅ + ... + T₈₆₃.

It is not a de Polignac number, because 87403065 - 2²⁵ = 53848633 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78187 + ... + 79296.

It is an arithmetic number, because the mean of its divisors is an integer number (8976588).

Almost surely, 2^87403065 is an apocalyptic number.

It is an amenable number.

87403065 is a deficient number, since it is larger than the sum of its proper divisors (56222343).

87403065 is a wasteful number, since it uses less digits than its factorization.

87403065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157528.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 87403065 is about 9348.9606374185. The cubic root of 87403065 is about 443.7879993909.

The spelling of 87403065 in words is "eighty-seven million, four hundred three thousand, sixty-five".