76621401 has 24 divisors (see below), whose sum is σ = 112975200. Its totient is φ = 50029056.

The previous prime is 76621373. The next prime is 76621409. The reversal of 76621401 is 10412667.

It is not a de Polignac number, because 76621401 - 2¹⁹ = 76097113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76621409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170425 + ... + 170873.

It is an arithmetic number, because the mean of its divisors is an integer number (4707300).

Almost surely, 2^76621401 is an apocalyptic number.

It is an amenable number.

76621401 is a deficient number, since it is larger than the sum of its proper divisors (36353799).

76621401 is a wasteful number, since it uses less digits than its factorization.

76621401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 802 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 76621401 is about 8753.3651243393. The cubic root of 76621401 is about 424.7336758200.

The spelling of 76621401 in words is "seventy-six million, six hundred twenty-one thousand, four hundred one".