67621825 has 6 divisors (see below), whose sum is σ = 83851094. Its totient is φ = 54097440.

The previous prime is 67621793. The next prime is 67621907. The reversal of 67621825 is 52812676.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4096 + 67617729 = 64^2 + 8223^2 .

It is not a de Polignac number, because 67621825 - 2⁵ = 67621793 is a prime.

It is a super-2 number, since 2×67621825² = 9145422432661250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1352412 + ... + 1352461.

Almost surely, 2^67621825 is an apocalyptic number.

It is an amenable number.

67621825 is a deficient number, since it is larger than the sum of its proper divisors (16229269).

67621825 is a wasteful number, since it uses less digits than its factorization.

67621825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704883 (or 2704878 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 67621825 is about 8223.2490537500. The cubic root of 67621825 is about 407.4074463295.

The spelling of 67621825 in words is "sixty-seven million, six hundred twenty-one thousand, eight hundred twenty-five".