87246813 has 4 divisors (see below), whose sum is σ = 116329088. Its totient is φ = 58164540.

The previous prime is 87246799. The next prime is 87246823. The reversal of 87246813 is 31864278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 87246813 - 2⁶ = 87246749 is a prime.

It is a super-2 number, since 2×87246813² = 15224012757313938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87246823) 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, 14541133 + ... + 14541138.

It is an arithmetic number, because the mean of its divisors is an integer number (29082272).

Almost surely, 2^87246813 is an apocalyptic number.

It is an amenable number.

87246813 is a deficient number, since it is larger than the sum of its proper divisors (29082275).

87246813 is a wasteful number, since it uses less digits than its factorization.

87246813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29082274.

The product of its digits is 64512, while the sum is 39.

The square root of 87246813 is about 9340.6002483780. The cubic root of 87246813 is about 443.5233857669.

The spelling of 87246813 in words is "eighty-seven million, two hundred forty-six thousand, eight hundred thirteen".