3720745 has 8 divisors (see below), whose sum is σ = 5102784. Its totient is φ = 2551344.

The previous prime is 3720707. The next prime is 3720767. The reversal of 3720745 is 5470273.

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

It is a cyclic number.

It is not a de Polignac number, because 3720745 - 2⁷ = 3720617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53119 + ... + 53188.

It is an arithmetic number, because the mean of its divisors is an integer number (637848).

Almost surely, 2^3720745 is an apocalyptic number.

3720745 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3720745 is a deficient number, since it is larger than the sum of its proper divisors (1382039).

3720745 is a wasteful number, since it uses less digits than its factorization.

3720745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106319.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 3720745 is about 1928.9232747831. The cubic root of 3720745 is about 154.9565608414.

It can be divided in two parts, 3720 and 745, that added together give a triangular number (4465 = T₉₄).

The spelling of 3720745 in words is "three million, seven hundred twenty thousand, seven hundred forty-five".