697439699942 has 4 divisors (see below), whose sum is σ = 1046159549916. Its totient is φ = 348719849970.

The previous prime is 697439699921. The next prime is 697439699953. The reversal of 697439699942 is 249996934796.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174359924984 + ... + 174359924987.

It is an arithmetic number, because the mean of its divisors is an integer number (261539887479).

Almost surely, 2^697439699942 is an apocalyptic number.

697439699942 is a deficient number, since it is larger than the sum of its proper divisors (348719849974).

697439699942 is a wasteful number, since it uses less digits than its factorization.

697439699942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348719849973.

The product of its digits is 1428513408, while the sum is 77.

The spelling of 697439699942 in words is "six hundred ninety-seven billion, four hundred thirty-nine million, six hundred ninety-nine thousand, nine hundred forty-two".