87278629 has 8 divisors (see below), whose sum is σ = 96431040. Its totient is φ = 78572736.

The previous prime is 87278573. The next prime is 87278677. The reversal of 87278629 is 92687278.

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 87278629 - 2⁷ = 87278501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87278929) 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, 111219 + ... + 112000.

It is an arithmetic number, because the mean of its divisors is an integer number (12053880).

Almost surely, 2^87278629 is an apocalyptic number.

It is an amenable number.

87278629 is a deficient number, since it is larger than the sum of its proper divisors (9152411).

87278629 is a wasteful number, since it uses less digits than its factorization.

87278629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223259.

The product of its digits is 677376, while the sum is 49.

The square root of 87278629 is about 9342.3031956793. The cubic root of 87278629 is about 443.5772919388.

The spelling of 87278629 in words is "eighty-seven million, two hundred seventy-eight thousand, six hundred twenty-nine".