7620690 has 64 divisors (see below), whose sum is σ = 22809600. Its totient is φ = 1583040.

The previous prime is 7620677. The next prime is 7620703. The reversal of 7620690 is 960267.

It is an interprime number because it is at equal distance from previous prime (7620677) and next prime (7620703).

It is a super-2 number, since 2×7620690² = 116149832152200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 661 + ... + 3959.

It is an arithmetic number, because the mean of its divisors is an integer number (356400).

Almost surely, 2^7620690 is an apocalyptic number.

7620690 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7620690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11404800).

7620690 is an abundant number, since it is smaller than the sum of its proper divisors (15188910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7620690 is a wasteful number, since it uses less digits than its factorization.

7620690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 7620690 is about 2760.5597258527. The cubic root of 7620690 is about 196.7877673506.

The spelling of 7620690 in words is "seven million, six hundred twenty thousand, six hundred ninety".