5420645 has 8 divisors (see below), whose sum is σ = 6526104. Its totient is φ = 4322304.

The previous prime is 5420633. The next prime is 5420669. The reversal of 5420645 is 5460245.

5420645 = T₁₄₇₀ + T₁₄₇₁ + ... + T₁₄₇₄.

It can be written as a sum of positive squares in 4 ways, for example, as 964324 + 4456321 = 982^2 + 2111^2 .

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 5420645 - 2¹² = 5416549 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent 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, 77 + ... + 3293.

It is an arithmetic number, because the mean of its divisors is an integer number (815763).

Almost surely, 2^5420645 is an apocalyptic number.

It is an amenable number.

5420645 is a deficient number, since it is larger than the sum of its proper divisors (1105459).

5420645 is a wasteful number, since it uses less digits than its factorization.

5420645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 5420645 is about 2328.2278668550. The cubic root of 5420645 is about 175.6643590311.

The spelling of 5420645 in words is "five million, four hundred twenty thousand, six hundred forty-five".