787401 has 10 divisors (see below), whose sum is σ = 1176362. Its totient is φ = 524880.

The previous prime is 787361. The next prime is 787427. The reversal of 787401 is 104787.

It can be written as a sum of positive squares in only one way, i.e., 455625 + 331776 = 675^2 + 576^2 .

It is not a de Polignac number, because 787401 - 2⁶ = 787337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (787601) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4780 + ... + 4941.

2⁷⁸⁷⁴⁰¹ is an apocalyptic number.

It is an amenable number.

787401 is a deficient number, since it is larger than the sum of its proper divisors (388961).

787401 is an equidigital number, since it uses as much as digits as its factorization.

787401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9733 (or 9724 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 787401 is about 887.3561855309. The cubic root of 787401 is about 92.3418676341.

The spelling of 787401 in words is "seven hundred eighty-seven thousand, four hundred one".