61597490 has 16 divisors (see below), whose sum is σ = 111057048. Its totient is φ = 24598656.

The previous prime is 61597469. The next prime is 61597517. The reversal of 61597490 is 9479516.

It can be written as a sum of positive squares in 4 ways, for example, as 47210641 + 14386849 = 6871^2 + 3793^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1814 + ... + 11246.

Almost surely, 2^61597490 is an apocalyptic number.

61597490 is a deficient number, since it is larger than the sum of its proper divisors (49459558).

61597490 is a wasteful number, since it uses less digits than its factorization.

61597490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10093.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 61597490 is about 7848.4068447042. The cubic root of 61597490 is about 394.9308002475.

The spelling of 61597490 in words is "sixty-one million, five hundred ninety-seven thousand, four hundred ninety".