3696729 has 4 divisors (see below), whose sum is σ = 4928976. Its totient is φ = 2464484.

The previous prime is 3696727. The next prime is 3696731. The reversal of 3696729 is 9276963.

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 an emirpimes, since its reverse is a distinct semiprime: 9276963 = 3 ⋅3092321.

It is an interprime number because it is at equal distance from previous prime (3696727) and next prime (3696731).

It is a cyclic number.

It is not a de Polignac number, because 3696729 - 2¹ = 3696727 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3696727) 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, 616119 + ... + 616124.

It is an arithmetic number, because the mean of its divisors is an integer number (1232244).

Almost surely, 2^3696729 is an apocalyptic number.

It is an amenable number.

3696729 is a deficient number, since it is larger than the sum of its proper divisors (1232247).

3696729 is a wasteful number, since it uses less digits than its factorization.

3696729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232246.

The product of its digits is 122472, while the sum is 42.

The square root of 3696729 is about 1922.6879622029. The cubic root of 3696729 is about 154.6224456376.

The spelling of 3696729 in words is "three million, six hundred ninety-six thousand, seven hundred twenty-nine".