7620000061 has 2 divisors, whose sum is σ = 7620000062. Its totient is φ = 7620000060.

The previous prime is 7620000053. The next prime is 7620000133. The reversal of 7620000061 is 1600000267.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4046232100 + 3573767961 = 63610^2 + 59781^2 .

It is a cyclic number.

It is not a de Polignac number, because 7620000061 - 2³ = 7620000053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7619999987 and 7620000041.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7620000041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3810000030 + 3810000031.

It is an arithmetic number, because the mean of its divisors is an integer number (3810000031).

Almost surely, 2^7620000061 is an apocalyptic number.

It is an amenable number.

7620000061 is a deficient number, since it is larger than the sum of its proper divisors (1).

7620000061 is an equidigital number, since it uses as much as digits as its factorization.

7620000061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 7620000061 is about 87292.6117205803. The cubic root of 7620000061 is about 1967.8182844596.

The spelling of 7620000061 in words is "seven billion, six hundred twenty million, sixty-one", and thus it is an aban number.