87204397 has 8 divisors (see below), whose sum is σ = 99791552. Its totient is φ = 74649600.

The previous prime is 87204389. The next prime is 87204409. The reversal of 87204397 is 79340278.

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 87204397 - 2³ = 87204389 is a prime.

It is a super-2 number, since 2×87204397² = 15209213712267218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87204307) 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, 2004 + ... + 13357.

It is an arithmetic number, because the mean of its divisors is an integer number (12473944).

Almost surely, 2^87204397 is an apocalyptic number.

It is an amenable number.

87204397 is a deficient number, since it is larger than the sum of its proper divisors (12587155).

87204397 is a wasteful number, since it uses less digits than its factorization.

87204397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16179.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 87204397 is about 9338.3294544581. The cubic root of 87204397 is about 443.4514995217.

The spelling of 87204397 in words is "eighty-seven million, two hundred four thousand, three hundred ninety-seven".