80629405 has 8 divisors (see below), whose sum is σ = 96837984. Its totient is φ = 64448400.

The previous prime is 80629399. The next prime is 80629433. The reversal of 80629405 is 50492608.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80629405 - 2³ = 80629397 is a prime.

It is a super-2 number, since 2×80629405² = 13002201901308050, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 210 + ... + 12700.

It is an arithmetic number, because the mean of its divisors is an integer number (12104748).

Almost surely, 2^80629405 is an apocalyptic number.

It is an amenable number.

80629405 is a deficient number, since it is larger than the sum of its proper divisors (16208579).

80629405 is a wasteful number, since it uses less digits than its factorization.

80629405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13787.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 80629405 is about 8979.3877853671. The cubic root of 80629405 is about 432.0139973888.

The spelling of 80629405 in words is "eighty million, six hundred twenty-nine thousand, four hundred five".