697451372421 has 16 divisors (see below), whose sum is σ = 947606027904. Its totient is φ = 456134462784.

The previous prime is 697451372419. The next prime is 697451372467. The reversal of 697451372421 is 124273154796.

It is a happy number.

It is not a de Polignac number, because 697451372421 - 2¹ = 697451372419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697451372621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 936915 + ... + 1507551.

It is an arithmetic number, because the mean of its divisors is an integer number (59225376744).

Almost surely, 2^697451372421 is an apocalyptic number.

It is an amenable number.

697451372421 is a deficient number, since it is larger than the sum of its proper divisors (250154655483).

697451372421 is a wasteful number, since it uses less digits than its factorization.

697451372421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578380.

The product of its digits is 2540160, while the sum is 51.

The spelling of 697451372421 in words is "six hundred ninety-seven billion, four hundred fifty-one million, three hundred seventy-two thousand, four hundred twenty-one".