696777642 has 48 divisors (see below), whose sum is σ = 1648752768. Its totient is φ = 210911040.

The previous prime is 696777619. The next prime is 696777643. The reversal of 696777642 is 246777696.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (696777643) 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, 280518 + ... + 282990.

It is an arithmetic number, because the mean of its divisors is an integer number (34349016).

Almost surely, 2^696777642 is an apocalyptic number.

696777642 is an abundant number, since it is smaller than the sum of its proper divisors (951975126).

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

696777642 is a wasteful number, since it uses less digits than its factorization.

696777642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915 (or 3912 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 54.

The square root of 696777642 is about 26396.5460240540. The cubic root of 696777642 is about 886.5394559680.

Adding to 696777642 its sum of digits (54), we get a palindrome (696777696).

The spelling of 696777642 in words is "six hundred ninety-six million, seven hundred seventy-seven thousand, six hundred forty-two".