694648061 has 4 divisors (see below), whose sum is σ = 694716000. Its totient is φ = 694580124.

The previous prime is 694648057. The next prime is 694648063. The reversal of 694648061 is 160846496.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 694648061 - 2² = 694648057 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 (694648063) 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, 15161 + ... + 40238.

It is an arithmetic number, because the mean of its divisors is an integer number (173679000).

Almost surely, 2^694648061 is an apocalyptic number.

It is an amenable number.

694648061 is a deficient number, since it is larger than the sum of its proper divisors (67939).

694648061 is a wasteful number, since it uses less digits than its factorization.

694648061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67938.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 694648061 is about 26356.1769040959. The cubic root of 694648061 is about 885.6353491455.

The spelling of 694648061 in words is "six hundred ninety-four million, six hundred forty-eight thousand, sixty-one".