693601901 has 4 divisors (see below), whose sum is σ = 698896704. Its totient is φ = 688307100.

The previous prime is 693601871. The next prime is 693601907. The reversal of 693601901 is 109106396.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 693601901 - 2⁶ = 693601837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693601907) 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, 2647205 + ... + 2647466.

It is an arithmetic number, because the mean of its divisors is an integer number (174724176).

Almost surely, 2^693601901 is an apocalyptic number.

It is an amenable number.

693601901 is a deficient number, since it is larger than the sum of its proper divisors (5294803).

693601901 is a wasteful number, since it uses less digits than its factorization.

693601901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5294802.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 693601901 is about 26336.3228450746. The cubic root of 693601901 is about 885.1905283130.

The spelling of 693601901 in words is "six hundred ninety-three million, six hundred one thousand, nine hundred one".