697199421 has 8 divisors (see below), whose sum is σ = 942333760. Its totient is φ = 458432352.

The previous prime is 697199413. The next prime is 697199429. The reversal of 697199421 is 124991796.

It is an interprime number because it is at equal distance from previous prime (697199413) and next prime (697199429).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 697199421 - 2³ = 697199413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697199429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1591561 + ... + 1591998.

It is an arithmetic number, because the mean of its divisors is an integer number (117791720).

Almost surely, 2^697199421 is an apocalyptic number.

It is an amenable number.

697199421 is a deficient number, since it is larger than the sum of its proper divisors (245134339).

697199421 is a wasteful number, since it uses less digits than its factorization.

697199421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183635.

The product of its digits is 244944, while the sum is 48.

The square root of 697199421 is about 26404.5340992792. The cubic root of 697199421 is about 886.7183022642.

The spelling of 697199421 in words is "six hundred ninety-seven million, one hundred ninety-nine thousand, four hundred twenty-one".