7620431 has 16 divisors (see below), whose sum is σ = 9576000. Its totient is φ = 6025824.

The previous prime is 7620427. The next prime is 7620443. The reversal of 7620431 is 1340267.

It is not a de Polignac number, because 7620431 - 2² = 7620427 is a prime.

It is a super-2 number, since 2×7620431² = 116141937251522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7620397 and 7620406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7620421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3605 + ... + 5313.

It is an arithmetic number, because the mean of its divisors is an integer number (598500).

Almost surely, 2^7620431 is an apocalyptic number.

7620431 is a deficient number, since it is larger than the sum of its proper divisors (1955569).

7620431 is a wasteful number, since it uses less digits than its factorization.

7620431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 7620431 is about 2760.5128146777. The cubic root of 7620431 is about 196.7855379545.

Adding to 7620431 its reverse (1340267), we get a palindrome (8960698).

The spelling of 7620431 in words is "seven million, six hundred twenty thousand, four hundred thirty-one".