4721667 has 8 divisors (see below), whose sum is σ = 6429696. Its totient is φ = 3080712.

The previous prime is 4721663. The next prime is 4721677. The reversal of 4721667 is 7661274.

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

It is not a de Polignac number, because 4721667 - 2² = 4721663 is a prime.

4721667 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4721663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16603 + ... + 16884.

It is an arithmetic number, because the mean of its divisors is an integer number (803712).

Almost surely, 2^4721667 is an apocalyptic number.

4721667 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

4721667 is a deficient number, since it is larger than the sum of its proper divisors (1708029).

4721667 is a wasteful number, since it uses less digits than its factorization.

4721667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33537.

The product of its digits is 14112, while the sum is 33.

The square root of 4721667 is about 2172.9397138439. The cubic root of 4721667 is about 167.7638760498.

The spelling of 4721667 in words is "four million, seven hundred twenty-one thousand, six hundred sixty-seven".