787147620 has 120 divisors (see below), whose sum is σ = 2588841024. Its totient is φ = 175056768.

The previous prime is 787147619. The next prime is 787147649. The reversal of 787147620 is 26741787.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 1369 × 1295 × 444.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21274242 + ... + 21274278.

Almost surely, 2^787147620 is an apocalyptic number.

787147620 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 787147620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294420512).

787147620 is an abundant number, since it is smaller than the sum of its proper divisors (1801693404).

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

787147620 is an frugal number, since it uses more digits than its factorization.

787147620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 42.

The square root of 787147620 is about 28056.1511971974. The cubic root of 787147620 is about 923.3196158765.

The spelling of 787147620 in words is "seven hundred eighty-seven million, one hundred forty-seven thousand, six hundred twenty".