80898615 has 32 divisors (see below), whose sum is σ = 164367360. Its totient is φ = 36981792.

The previous prime is 80898611. The next prime is 80898647. The reversal of 80898615 is 51689808.

It is not a de Polignac number, because 80898615 - 2² = 80898611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80898611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41859 + ... + 43748.

It is an arithmetic number, because the mean of its divisors is an integer number (5136480).

Almost surely, 2^80898615 is an apocalyptic number.

80898615 is an abundant number, since it is smaller than the sum of its proper divisors (83468745).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80898615 is a wasteful number, since it uses less digits than its factorization.

80898615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85628 (or 85622 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 80898615 is about 8994.3657363930. The cubic root of 80898615 is about 432.4942741510.

The spelling of 80898615 in words is "eighty million, eight hundred ninety-eight thousand, six hundred fifteen".