87738477 has 8 divisors (see below), whose sum is σ = 117132480. Its totient is φ = 58418400.

The previous prime is 87738473. The next prime is 87738517. The reversal of 87738477 is 77483778.

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

It is not a de Polignac number, because 87738477 - 2² = 87738473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87738473) 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, 15649 + ... + 20502.

It is an arithmetic number, because the mean of its divisors is an integer number (14641560).

Almost surely, 2^87738477 is an apocalyptic number.

It is an amenable number.

87738477 is a deficient number, since it is larger than the sum of its proper divisors (29394003).

87738477 is a wasteful number, since it uses less digits than its factorization.

87738477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36963.

The product of its digits is 1843968, while the sum is 51.

The square root of 87738477 is about 9366.8819251659. The cubic root of 87738477 is about 444.3549582175.

The spelling of 87738477 in words is "eighty-seven million, seven hundred thirty-eight thousand, four hundred seventy-seven".