7738690 has 8 divisors (see below), whose sum is σ = 13929660. Its totient is φ = 3095472.

The previous prime is 7738663. The next prime is 7738693. The reversal of 7738690 is 968377.

It can be written as a sum of positive squares in 2 ways, for example, as 7601049 + 137641 = 2757^2 + 371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7738690² = 119774645832200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7738693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386925 + ... + 386944.

Almost surely, 2^7738690 is an apocalyptic number.

7738690 is a deficient number, since it is larger than the sum of its proper divisors (6190970).

7738690 is a wasteful number, since it uses less digits than its factorization.

7738690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773876.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 7738690 is about 2781.8501037978. The cubic root of 7738690 is about 197.7982674793.

The spelling of 7738690 in words is "seven million, seven hundred thirty-eight thousand, six hundred ninety".