80612405 has 4 divisors (see below), whose sum is σ = 96734892. Its totient is φ = 64489920.

The previous prime is 80612377. The next prime is 80612423. The reversal of 80612405 is 50421608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29789764 + 50822641 = 5458^2 + 7129^2 .

It is not a de Polignac number, because 80612405 - 2¹² = 80608309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8061236 + ... + 8061245.

It is an arithmetic number, because the mean of its divisors is an integer number (24183723).

Almost surely, 2^80612405 is an apocalyptic number.

It is an amenable number.

80612405 is a deficient number, since it is larger than the sum of its proper divisors (16122487).

80612405 is a wasteful number, since it uses less digits than its factorization.

80612405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16122486.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 80612405 is about 8978.4411230458. The cubic root of 80612405 is about 431.9836331391.

The spelling of 80612405 in words is "eighty million, six hundred twelve thousand, four hundred five".