787674420 has 72 divisors (see below), whose sum is σ = 2573077416. Its totient is φ = 193888512.

The previous prime is 787674409. The next prime is 787674427. The reversal of 787674420 is 24476787.

It can be written as a sum of positive squares in 4 ways, for example, as 18610596 + 769063824 = 4314^2 + 27732^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787674427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165967 + ... + 170646.

Almost surely, 2^787674420 is an apocalyptic number.

It is an amenable number.

787674420 is an abundant number, since it is smaller than the sum of its proper divisors (1785402996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

787674420 is a wasteful number, since it uses less digits than its factorization.

787674420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336641 (or 336636 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The square root of 787674420 is about 28065.5379424660. The cubic root of 787674420 is about 923.5255477299.

The spelling of 787674420 in words is "seven hundred eighty-seven million, six hundred seventy-four thousand, four hundred twenty".