3720157 has 8 divisors (see below), whose sum is σ = 4276800. Its totient is φ = 3169824.

The previous prime is 3720151. The next prime is 3720163. The reversal of 3720157 is 7510273.

It is an interprime number because it is at equal distance from previous prime (3720151) and next prime (3720163).

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

It is not a de Polignac number, because 3720157 - 2¹⁹ = 3195869 is a prime.

It is a Duffinian number.

3720157 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3720151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232 + ... + 2737.

It is an arithmetic number, because the mean of its divisors is an integer number (534600).

Almost surely, 2^3720157 is an apocalyptic number.

It is an amenable number.

3720157 is a deficient number, since it is larger than the sum of its proper divisors (556643).

3720157 is a wasteful number, since it uses less digits than its factorization.

3720157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 3720157 is about 1928.7708521232. The cubic root of 3720157 is about 154.9483976682.

The spelling of 3720157 in words is "three million, seven hundred twenty thousand, one hundred fifty-seven".