787813601 has 4 divisors (see below), whose sum is σ = 787940100. Its totient is φ = 787687104.

The previous prime is 787813561. The next prime is 787813627. The reversal of 787813601 is 106318787.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 473106001 + 314707600 = 21751^2 + 17740^2 .

It is a cyclic number.

It is not a de Polignac number, because 787813601 - 2¹⁰ = 787812577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (787813661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53396 + ... + 66533.

It is an arithmetic number, because the mean of its divisors is an integer number (196985025).

Almost surely, 2^787813601 is an apocalyptic number.

It is an amenable number.

787813601 is a deficient number, since it is larger than the sum of its proper divisors (126499).

787813601 is a wasteful number, since it uses less digits than its factorization.

787813601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126498.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 787813601 is about 28068.0174041559. The cubic root of 787813601 is about 923.5799397629.

The spelling of 787813601 in words is "seven hundred eighty-seven million, eight hundred thirteen thousand, six hundred one".