87854797 has 4 divisors (see below), whose sum is σ = 89724096. Its totient is φ = 85985500.

The previous prime is 87854791. The next prime is 87854813. The reversal of 87854797 is 79745878.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87854797 is a prime.

It is a super-2 number, since 2×87854797² = 15436930711822418, 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 (87854791) 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, 934579 + ... + 934672.

It is an arithmetic number, because the mean of its divisors is an integer number (22431024).

Almost surely, 2^87854797 is an apocalyptic number.

It is an amenable number.

87854797 is a deficient number, since it is larger than the sum of its proper divisors (1869299).

87854797 is a wasteful number, since it uses less digits than its factorization.

87854797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869298.

The product of its digits is 3951360, while the sum is 55.

The square root of 87854797 is about 9373.0889785598. The cubic root of 87854797 is about 444.5512405696.

The spelling of 87854797 in words is "eighty-seven million, eight hundred fifty-four thousand, seven hundred ninety-seven".