87290063 has 4 divisors (see below), whose sum is σ = 99760080. Its totient is φ = 74820048.

The previous prime is 87290059. The next prime is 87290069. The reversal of 87290063 is 36009278.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36009278 = 2 ⋅18004639.

It is a cyclic number.

It is not a de Polignac number, because 87290063 - 2² = 87290059 is a prime.

It is a super-3 number, since 3×87290063³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87290069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6234998 + ... + 6235011.

It is an arithmetic number, because the mean of its divisors is an integer number (24940020).

Almost surely, 2^87290063 is an apocalyptic number.

87290063 is a deficient number, since it is larger than the sum of its proper divisors (12470017).

87290063 is a wasteful number, since it uses less digits than its factorization.

87290063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12470016.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 87290063 is about 9342.9151232364. The cubic root of 87290063 is about 443.5966614812.

The spelling of 87290063 in words is "eighty-seven million, two hundred ninety thousand, sixty-three".