1240772697 has 24 divisors (see below), whose sum is σ = 1913655744. Its totient is φ = 772811424.

The previous prime is 1240772671. The next prime is 1240772699. The reversal of 1240772697 is 7962770421.

It is not a de Polignac number, because 1240772697 - 2¹² = 1240768601 is a prime.

It is a super-4 number, since 4×1240772697⁴ (a number of 37 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1240772699) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60798 + ... + 78599.

It is an arithmetic number, because the mean of its divisors is an integer number (79735656).

Almost surely, 2^1240772697 is an apocalyptic number.

It is an amenable number.

1240772697 is a deficient number, since it is larger than the sum of its proper divisors (672883047).

1240772697 is a wasteful number, since it uses less digits than its factorization.

1240772697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139469 (or 139466 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 1240772697 is about 35224.6035747743. The cubic root of 1240772697 is about 1074.5601797686.

The spelling of 1240772697 in words is "one billion, two hundred forty million, seven hundred seventy-two thousand, six hundred ninety-seven".